—Can you work out the problem?　 —I can’t ______your explain how to do it.

A. but for 　 B. except 　　 C. apart from D. unless

I'd like to share a story ______ music overcomes a physical barrier and makes a connection with a young student.

A. which　　　　 B. that　　　　　　 C. when　　　 D. where

He was extremely successful in his _______ to write music that would please ordinary people.

A. admiration B. ambition　　 C. motivation　　 D. reputation

It is c______________ of you not to make any noise while the others are having a rest.

In order to improve English,________. ?

A. Jenny’s father bought her a lot of tapes?B. Jenny bought a lot of tapes for herself?

C. a lot of tapes were bought by Jenny?　 D. a lot of tapes were bought by Jenny’s father?

When first______ to the market, these products enjoyed great success. （04全国II）

　　　 A introducing　　 B introduced　　 C introduce　 D being introduced

They asked me to have a dinner in an excellent restaurant with them, I said that it was at least five years since I _______ a good meal.

A. had enjoyed B. was enjoying C. enjoyed D. had been enjoying

We agree ______ here but so far she hasn’t turned up yet.

A. having met 　 B. meeting　 C. to meet 　 D. to have met

I’d prefer to____ my judgement until I find all the evidence.

A.show　 B. express　 C.pass　 D.reserve

By careful observation and precise calculation, Nicolaus Copernicus _____ that there is no one center in the universe and the sun is the center of the solar system.

　 A. believed　 B. thought　 C. concluded　 D. imagined