21、She searched all the places where she _____ have left her necklace but it was all in vain.

A．might           B．would           C．could          D．should

20、______ the students in our class is 50 and _______ them study very hard.

A．The number of; the number of                 B．A number of; the number of

C．The number of; a number of                  D．A number of; a umber of

19、She didn’t ______ work when she had the baby.

A．give in      B．give out        C．give away       D．give up

18、The _____ look on his face showed that he had enough confidence in himself.

A．surprised       B．puzzled        C．excited       D．determined

17、_______ from what he did, he isn’t a person to depend on.

A．Judge          B．Judging          C．Judged          D．To judge

16、---- I’m sorry I can’t go to the concert with you tonight, because I have a bad cold.

---- If you don’t go, __________.

A．nor do I         B．nor will I        C．so do I               D．so will I

15、---- Have you heard that Peter rather than his parents _________ to Singapore?

---- Really? No wonder I haven’t seen her.

A．has been        B．has gone        C．have gone         D．have been

14、—Bruce, I really appreciate （欣赏）your handwriting.

—_________.

A．I practice every day                             B．Thank you very much

C．No, I don not think so                           D．Well, it is not good enough

13、The old man lost his money and he has been worried ________.

A．even if        B．even as        C．ever since        D．as if