It is clear that the whole world is passing through a social revolution in which a central_____ must be taken by scientists and technologists.

When I took his temperature, it was two degrees above ___.

___ he does has nothing to do with me.

When I worked as the general manager of the firm, I sometimes had ___ to visit London on business.

The manager came over and asked the customer how ___.

The population of beijing has been increased for ten years.

___ I saw the computer, I showed great interest in it.

Can you arrive the top of the roof?

He speaks English ___ he speaks his mother tongue.

My mother is __________ a piece of meat.

I often visited Tian’an Men Square ___ I was staying in Beijing.

Try ___ he might, he couldn’t get out of difficulty.

Ladies and gentlemen, please fasten your seat belts. The plane __________.

When did you arrive in new york?

The poor man works days and nights in order to gain more money.

The exciting news made them excited.

We can pick some apples.

Not until all the fish died in the river ___ how serious the pollution was.

The noise was so ____ that only those with excellent hearing were aware of it.

His landlady gave him a weeks ___ to leave the flat.

Why not buy a cheaper one, ___ you don’t have enough money?

I don’t think you’ll be able to understand this formula(公式)___ you finish school.

It is ten years ___ I left home.

With the popularity of smartphones, the micro blog __________ a good platform for the young to show themselves gradually.

___ he is poor, he is well contented.

It was ___ it rained heavily that they didn’t come.

1. We cant ___ one to change the habits of a lifetime in a short time.

There were dirty marks on her trousers ___ she had wiped her hands.

EBay, Amazon and WalMart are popular websites ___ people can sell goods to each other.

I hope ___ the little ___ I have been able to do has been of some use.