21.Shirley ________ a book about China last year but I don't know whether she has finished.

　　A.has written B.wrote

　　C.had written D.was writing

　　22.-Have you got your test result?

　　-Not yet.The papers ________.

　　A.are not correcting

　　B.have not corrected

　　C.are still being corrected

　　D.have already been corrected

　　23.See the clouds! It ________ rain!

　　A.will　 B.is going to　 C.must　 D.certainly

　　24.Do I have to take this medicine? It ________ so terrible.

　　A.tastes B.is tasting C.is tasted D.has tasted

　　25.Don't take the magazine away.It ________ me.

　　A.is belonged to B.belongs to

　　C.was belonged to D.is belonging to

　　26.Is this the third time that you ________ late?

　　A.have been B.am C.was D.had been

　　27.-Do you know when Tom ________ from abroad?

　　-Perhaps it will be a long time before he ________.

　　A.will come; will come B.comes; will come

　　C.will come; comes D.comes; comes

　　28.My uncle said that he would telephone but I ________ from him so far.

　　A.didn't hear B.hadn't heard

　　C.haven't heard D.won't hear

　　29.The telephone ________ four times in the last hour，and each time it ________ for my roommate.

　　A.has rung; was B.has been ringing; is

　　C.had rung; was D.rang; has been

　　30.A storm ________ by a calm.

　　A.is often being followed B.was often followed

　　C.is often followed D.has often been followed

　　31.The pen I ________ I ________ is on my desk，right under my nose.

　　A.think; lost B.thought; had lost

　　C.think; had lost D.thought; lost

　　32.-We could have walked to the station.It was so near.

　　-Yes，a taxi ________ at all necessary.

　　A.wasn't B.hadn't been

　　C.couldn't be D.won't be

　　33.A friend of mine returned to his house after a holiday only to find it ________.

　　A.to be broken B.had broken into

　　C.was broken D.had been broken into

　　34.They believed that by using computers the production of their factory ________.

　　A.will greatly increase

　　B.would greatly increase

　　C.would be increased greatly

　　D.will have been greatly increased

　　35.His eyes shone brightly when he finally received the magazines he ________.

　　A.had long been expected

　　B.had long expected

　　C.has long expected

　　D.was long expected

　　36.-Do you like the new pen?

　　-Yes，it ________ very well.

　　A.is written B.is writing

　　C.writes D.wrote

　　37.-Oh，it's you? I didn't recognize you.

　　-I ________ my hair cut，and I ________ new glass.

　　A.had; was wearing B.have had; am wearing

　　C.had; wore D.have had; wear

　　38.As she ________ the newspaper，Granny ________ asleep.

　　A.read; was falling B.was reading; fell

　　C.was reading; was falling D.read; fell

　　39.However hard you ________，you will never succeed in pleasing her.

　　A.try B.will try

　　C.should try D.would try

　　40.-Can I help you，sir?

　　-Yes，I bought this radio yesterday，but it ________.

　　A.didn't work B.won't work

　　C.can't work D.doesn't work