As is known to all language learners, newly learnt words will soon be forgotten unless ______       used in everyday communication.

A. exactly        B. finally                 C. gradually               D. frequently

I will be surprised if you can get Calvin, who is very mean, ______ these donation draw tickets from you．

A. buy                      B. buying          C. buys       D. to buy

 --- I saw your uncle take a taxi to the airport. Why didn’t you drive him there?

   --- I ______. But my car ______.

A. would; was fixed                B. would have; was fixed

C. would have; was being fixed       D. did; was being fixed

In his lecture, the professor referred to the belief, in contrast to all other countries, ______ the elderly are wise, ______ is particularly dominant （占优势的） in the Chinese culture．

A. that; that           B. that; one that           C. which; which                D.  that; one

Was it not until you began to write ______ you should have remembered more words?

A. did you realize                             B. that you realized

C. did you not realize                         D. that you didn't realize

Sometimes smiles around the world ______ be false, hiding other feelings like anger, fear or worry.

A. must                                 B. would                               C. should                                        D. can

Not having promoted the new digital camera successfully, the company should ______ its original marketing methods.

A. account for     B. reflect on               C. work out                      D. call up

The knowledge that his friends have deserted him is a (n) ______ pill for Mr. Smith to swallow.

A. extra               B. common                    C.        bitter            D. effective

—He is a very hard-working student.

— ______. As far as I know, he often burns the midnight oil.

A. You can say that again      B. Absolutely not

C. Heaven knows              D. No way

 Of the two brothers, Bill is ______ younger one, and he is a quiet boy, ______ that most adults like very much.

A. the; one                           B. a; the one                        C. a; one                               D. the; the one