21.Japan is ________ the east of China. Fujian is ____ the southeast of China. ( )

A. in; in B. to; in C. on ; to D. in; to

解析：选 B. 日本位于中国东部(外面)用 to, 福建位于中国东部(内部)用 in。

22.The postman shouted, “ Mr Green, here is a letter ________ you.”( )

A. to B. from C. for D. of

解析： 选 C. 介词的考查。句意Mr Green, 这是你的信。学生容易误选 A。

23.He hasn’t heard from his friend _________ last month. ( )

A. since B. by the end of C. for D. until

解析： A. 此题学生容易受思维定势 not… until…的影响误选 D。since 用于现在完成时，如果此题是一般过去时就选择 D。

24. —Jimmy lost his key yesterday。 ( )—________? It’s his third time in just one month.

A. Has he B. Did he C. Was he D. Does he

解析：B. 根据上一句一般过去时可以判断。

25.You’ve passed the exam. I’m happy ______ you.( )

A. on B. at C. in D. for

解析：选 D. 句意你考试及格了，我为你高兴。

26. I wonder ________ they finished so many different jobs in such a short time.( )

A. why B. how C. when D. where

解析：选 B. 句意我想知道他在如此短的时间内是怎样完成这么多不同工作的。

27.—Ought I to go rightnow? ( )— A. That’s very bad. B. Yes, you go ought to C. Yes, you ought D. No, you ought not to

解析： 选 D. 句子的肯定回答为Yes, you ought to. 否定回答为No, you ought not to.解析： 选 D. 句子的肯定回答为Yes, you ought to. 否定回答为No, you ought not to.

28. I don’t know when he _____. When he _____ here, I’ll call you in a minute.( )

A. will come; will arrive B. comes; arrices C. will come; arrives D. comes; will arrive

解析：选 C. 第一句是宾语从句根据语境用一般将来时，第二句是时间状语从句，由于主句是一般将来时，那么从句要用一般现在时来代替。

29. He turned ________ the radio a little because his father was asleep.( )

A. on B. down C. up D. off

解析： 选 B. 此题学生会误选 D. 但后面有个副词短语 a little, 故选择 B, 意为把收音机调小一点，父亲在睡觉。如果去掉 a little 则选择 D。

30. I don’t know the homework _______ today.( )

A. on B. in C. of D. for

解析： 选 D. 句意 我不知道今天的家庭作业。