After starting work, Cao spent his evenings _____ in his books and was eventually admitted to a secondary technical school.

A. burying B. buried

C. being buried D. having buried

Investment by Chinese companies in the US _____ rapidly in recent years.

A. was growing B. has been growing

C. had grown D. will be growing

I didn’t know that he was a cheat, or else I ________________ him.

A. should have believed B. shouldn’t believe

C. wouldn’t have believed D. couldn’t believe

Only after her mother came to help her for the first few months _____ to begin her propjet.

A. was she allowedB. she was allowed

C. did she permitD. she permitted

No, I’m too busy right now. Please give me an hour, _____?

A. do youB. don’t youC. am I D. OK

One possibility is that tears get rid of certain chemicals from your body _____ build up during stress.

A. to which B. that

C. where D. in which

Two men ___ into my flat. One of them threatened me with a knife while the other tied me up.

A. found their wayB. pushed their way

C. wound their wayD. made their way

The airplane had a good _____ of newspapers, magazines, television programs, food and drinks. The meal even included a serving of Hagen-Dazs ice cream.

A. offer B. number

C. supply D. amount

According to _____ US First Lady Michelle Obama, China is _____ fifth most popular destination for Americans studying abroad.

A. a ......the B. the ...... a

C. / ...... the D. / ...... a

_____ the three elements of productive forces, namely, the people, the means of production and the subject of labor, the people is that most critical.

A. From B. With C. For D. Of