[1991全国] She's upstairs letters. A. writes B. is writing C. ——青夏教育精英家教网——

24.[1991全国] She's upstairs ________ letters.

A. writes

B. is writing

C. write

D. writing

23.[1991全国] I can hardly imagine Peter ________ across the Atlantic Ocean in five days.

A. sail

B. to sail

C. sailing

D. to have sailed

22.[2002全国] The research is so designed that once ________ nothing can be done to change it.

A. begins

B. having begun

C. beginning

D. begun

20.How can you ________ if you are not ________ ?

A. hear; listening	B. listen; hearing
C. be listening; heard	D. be hearing; listened to

18.I still remember you, as a student, ________ sweetly.

A. singing

B. to sing

C. sing

D. sung

17.The young man rushed out of the room, ________ into his car and started it hurriedly, ________ to get home as soon as possible.

A. got; hoped　　　　　　　　　　 B. getting; and hoped　　　　　　

C. got; hoping　　　　　　　　　　 D. getting; hoped

16.In the course of a day students do far more than just ________ classes.

A. attend

B. attended

C. to attend

D. attending

15.Anderson was in bed with all his clothes on, ________ awake all night long thinking of what he should do next.

A. lain

B. lay

C. to lie

D. lying

13.I don't know what illness he suffered from, but I do remember he mentioned ________ in hospital last year.

A. to have been

B. to be

C. having been

D. be

12.After ________ for the job, you will be required to take a language test.

A. being interviewed	B. interviewed
C. interviewing	D. having interviewed

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