It wasn't until in high school that I began to trust other people again.

It is how you handle each challenge that counts.

There is no doubt that human activity, which does great harm to the environment, is the main cause.

Here is the letter you have been looking forward to.

In came the teacher and the class began.

In the first row sat those representatives who came from across the country.

Present at the meeting were experts from Europe.

In he came and out he went again.

Such are the facts; no one can deny them.

Not once did it occur to Michael that he could one day become a top student in his class.

Only by spending at least two hours learning English every day can you improve it quickly.

Only Wang Ling knows this.

Only when he apologizes for his rudeness will I speak to him again.

Not only will help be given to people to find jobs, but also medical treatment will be provided for people who need it.

Not until he finished film studies did he pursue his career as an actor.

Much as he liked the story book, he donated it to the charity.

Child as he is, he has to make a living.

Try again as he might, he won't make it.

He promised to go there on time. So did I.

Peter didn't want the responsibility, and nor did his wife.

In much of Asia, especially the so-called "rice bowl" cultures of China, Japan, Korea, and Vietnam, food is usually eaten with chopsticks.

Chopsticks are usually two long, thin pieces of wood or bamboo. They can also be made of plastic, animal bone or metal. Sometimes chopsticks are quite artistic. Truly elegant chopsticks might be made of gold and silver with Chinese characters. Skilled workers also combine various hardwoods and metal to create special designs.

The Chinese have used chopsticks for five thousand years. People probably cooked their food in large pots, using twigs to remove it. Over time, as/when the population grew, people began cutting food into small pieces so it would cook more quickly. Food in small pieces could be eaten easily with twigs which gradually turned into chopsticks.

Some people think that the great Chinese scholar Confucius, who lived from roughly 551 to 479 B.C., influenced the development of chopsticks. Confucius believed knives would remind people of killings and were too violent for use at the table.

Chopsticks are not used everywhere in Asia. In India, for example, most people traditionally eat with their hands.

He is diligent. So he is.

He is an honest worker and works hard. So it is with you.

So frightened was he that he did not dare to move an inch.

Had you come earlier, you would have met him.

It was at the Rio Olympics that the Chinese women's volleyball team won the gold medal.

Experts said it was cooperation between the two countries that helped deal with the current economic difficulties.

It is I who/that am to blame for the traffic accident.

It was some old friends that he met at the evening party.

Was it in 1939 that the Second World War broke out?

When was it that he made up his mind to take this course?

The teacher asked who it was that was on duty that day.

It was not until the reunion of the cast from TV drama Journey to the West after 32 years that many people realized such a long time had gone.

It was midnight when he got back from work.

It was at midnight that he got back from work.

Do come on time tomorrow.

He did tell me the truth yesterday.

It is novels that Tom enjoys reading.

It is a question that needs careful consideration.

It is there that accidents often happen.

It is a fact that English is accepted as an international language.

Beg your pardon.

We'll do what we can (do) to help those in need.

Are you ready? Yes, I am.

My father is a doctor and my mother (is) a nurse.

Is the weather going like this? The weather forecast says so/not.

He told us the meeting was important and that we mustn't be late.

The trip (that/which) I had this summer was pleasant.

I was trying to find a place in which to lay all these books.

All the photographs in this book, unless stated, otherwise, date from the 1950s.

He invited me to have dinner with him, but I didn't want to (have dinner with him).

Are you an engineer? No, but I want to be.

What he did first was (to) thank all the people who helped him.

I noticed a man enter the classroom when I passed by.

The man was noticed to enter the classroom.

Were it not for the support of the teachers, the student could not overcome her difficulty.

Doctors' suggestion is that girls (should) not pay much attention to their waistlines like A4 waist.

Nobody came when I was out, did they?

Everyone enjoyed the party, didn't they?

Everything is going well at present, isn't it?

One should be ready to help others, shouldn't one?

What we have is more important than what we want to have, isn't it?

These are grapes, aren't they?

There is little room left in the car, is there?

It is unfair. isn't it?

There was a hospital here, wasn't there?

What fine weather, isn't it?

Don't touch the exhibition, will you?

Look at the blackboard, will you/won't you?

Let's go home, shall we?

Let me have a try, will you?

You never told me that you had been ill, did you?

I'm sure that he will come to the party next Friday, won't he?

I don't think he will come, will he?

Tom doesn't believe Jane will succeed, does he?

You have to water the vegetables every day, don't you?

He ought to know what to do, oughtn't/shouldn't he?

You used to sleep with the windows open, usedn't/didn't you?

He needs help, doesn't he?

Tom dares to go out alone at night, doesn't he?

We need not do it again, need we?

He must work hard at physics, mustn't he?

Tom must be at home, isn't he?

She must have finished her work, hasn't she?

Jack must have arrived here yesterday, didn't he?

You mustn't smoke here, must you?

Let's take a coffee break. You said it. We've been working for hours.

The professor warned the students that on no account should they use mobile phones in his class.

It was only when the car pulled up in front of our house that we saw Lily in the passenger seat.

It was when I got back to my apartment that I first came across my new neighbors.

You are waiting at a wrong place. It is at the hotel that the coach picks up tourists.

Not until recently did they encourage the development of tourist-related activities in the rural areas.

Only after talking to two students did I discover that having strong motivation is one of the biggest factors in reaching goals.

Only when Lily walked into the office did she realize that she had left the contract at home.

Only when you can find peace in your heart will/can you keep good relationships with others.

It was when we were returning home that I realized what a good feeling it was to have helped someone in trouble.

Bach died in 1750, but it was not until the early 19th century that his musical gift was fully recognized.

Always keep in mind that your main task is to get this company running smoothly.

Video games can be a poor influence if left in the wrong hands.

If accepted for the job, you'll be informed soon.

Was it because Jack came late for school that Mr. Smith got angry?

It was not until midnight that they reached the camp site.

Could it be in the restaurant that you lost your handbag?

Only in this way can/will you make great progress in your English study.

When carefully done, the experiment will be successful.

You study English, don't you?

It's a long way to Africa, isn't it?

David has made great progress recently and so have you.

She wants to know why it was that he left without a word.

Not until I began to work did I realize how much time I had wasted.

I will go to Lily's birthday party if invited.

So important is it to learn Germany for him that he wants to find a German to help him.

While orbiting the sun, the satellite has sent more than four billion bits of information back to the earth.

I like seeing kids happy and, if they are, it makes my job a lot easier.

It is his brother that is to blame for the accident.

I did call her last night, but the line was busy then.

So fast does light travel that it is difficult for us to imagine its speed.

Never in my life have I received such an embarrassment. They threw apples at me. Well. Fortunately watermelons are out of season.

When can I use your computer? Never! On no condition should you touch it.

Much as I have traveled, I have never seen anyone who's as capable as John.

Why! I have nothing to explain. What is it that you want me to say?

Are you too old for fairy tales? If you think so, Copenhagen is sure to change your mind.

Although it was ten years ago that I read the book, it shows me a universal truth that books are friends, always pushing us to move on.

I'm sure you'd rather she went to school by bus, wouldn't you?

There is no doubt that the job is challenging.

In that way, World Read Aloud Day does help make a difference.

In recent years, stress has been regarded as a cause of medical problems. However, like so many other things, it is only too much stress that does you harm.

It was terribly cold last winter. So it was. I have never experienced such a cold winter season in my life.

It is one's inner beauty that matters.

Was it Bill, who played basketball very well, that helped the blind man cross the road? Yes, of course. He is always ready to help others.

Refer to the answer, and then you will find where your problem is.

I don't know about you, but I'm sick and tired of this weather. So am I. I can't stand all this rain.

Have you seen the film Under the Hawthorn Tree? Of course , I have. It was in our village that it was made.

Only after they had discussed the matter for a few hours did they reach a decision.

Was it on a lonely island that he was saved one month after the boat went down?

Little did Rose care about her own safety, though she was in great danger herself.

Never before has she seen anybody who can play tennis as well as Robert.

John opened the door. There stood a girl he had never seen before.

Only when he reached the tea-house did he realize it was the same place he'd been in last year.

He seems to be giving the impression that he didn't enjoy himself in Paris. On the contrary, he had a wonderful time.

It was not until I came here that I realized this place was famous, for not only its beauty but also its weather.

Our school library, along with many other buildings, is very different from other schools'. There are two computer rooms, three art rooms, a meeting room and a reading room in the library building. The number of the books is large. It was 2,000,000 dollars that all the books cost our school. It is such a large amount of money that an average family can't afford it, right? But in my view, it is worth it because in the era of knowledge explosion, many students have a thirst for knowledge.

Our library is also a multifunctional building. There are 500 computers in it. Many a student surfs the Internet at weekends here and now you can see that my classmates, Mike and John, are surfing the Internet. How happy they are!

Look! a professor and writer is delivering a speech in the meeting room. Every time there is a wonderful speech, the audience always cheer/cheers up. What lovely children they are! Enter our art room and you will find a teacher with his students is painting in the room. On the wall are about 500 pictures, which attract many students.

Not until he retired from teaching three years ago did he consider having a holiday abroad.

Bill wasn't happy about the delay of the report by Jason, and neither was I.

Jane won't join us for dinner tonight and Tom won't either.

Unsatisfied though he was with the payment, he took the job just to get some work experience.

Not until he left his home did he begin to know how important the family was for him.

It was not until he came back from Africa that year that he met the girl he would like to marry.

Is everyone here? Not yet... Look, there come the rest of our guests!

Try as she might, Sue couldn't get the door open.

We laugh at jokes, but seldom do we think about how they work.

The experiment shows that proper amounts of exercise, if carried out regularly, can improve our health.

It sounds like something is wrong with the car's engine. If so, we'd better take it to the garage immediately.

At the meeting place of the Yangtze river and the Jialing river lies Chongqing, one of the ten largest cities in China.

It was from only a few supplies that she had bought in the village that the hostess cooked such a nice dinner.

There remains a certain doubt among the people as to the practical value of the project.

For a moment nothing happened. Then came voices all shouting together.

Every evening after dinner, if not tired from work, I will spend some time walking my dog.

What's the matter with Della? Well, her parents wouldn't allow her to go to the party, but she still hopes to.

Some of you may have finished Unit One. If so, you can go on to Unit Two.

Not only do the nurses want a pay increase, but they want reduced hours as well.

So sudden was the attack that the enemy had no time to escape.

Not until I came home last night did Mum go to bed.

It's the first time that he has been to Australia, isn't it?

It was in New Zealand that Elizabeth first met Mr. Smith.

Only when I left my parents for Italy did I realize how much I loved them.

Was it because of the terrible weather that his flight was delayed?

New technology was used in teaching. As a result, not only was teachers' energy saved, but students became more interested in the lessons.

It was not until she arrived home that she remembered her appointment with the doctor.

Look, in front of the house stands a tall tree with a history of over 100 years.

Errors, if any, should be corrected.

Had I persuaded him not to do so, he wouldn't have made such a serious mistake.

In 2018 the new Silk Road will get a digital dimension. Chinese scientist Guo Huadong on Tuesday published an article on the website of the academic journal Nature, calling on scientists to build a digital Silk Road to make the best use of big data.

Guo, who is an academician with the Chinese Academy of Sciences(CAS), said in the article that sharing big data from satellite imagery and other earth observations in the regions covered by China's Belt and Road Initiative is key to sustainability.

Guo underlined that the environments are diverse and fragile with various natural dangers in the regions. He believes a combination of accurate, reliable and timely scientific observations of ecosystems is vital.

Guo has been chairman of the Digital Belt and Road Program which was set up in 2016 by Chinese scientists teaming up with experts from 19 countries and 7 international organizations.

The aim of the Digital Belt and Road Program is to improve environmental monitoring, promote data sharing and support policymaking, Guo said.

In the article, Guo also sincerely invited more natural and social scientists to join the shared effort.