[26] The medicine _____ natural plants.

　　A. is made of 　 B. is made from

　　C. is made in 　 D. is made into

　　[答案] B。 制成成品看不出原材料应该用be made from。

　　[27] The beef is too expensive. I won’t buy it _____.

　　A. at that price 　 B. at a that price

　　C. on that price 　 D. in that price

　　[答案] A。 以…价格或速度用介词at。

　　[28] Three students in ten will go and _____ to stay in the classroom.

　　A. the rest are 　 B. the rest is

　　C. the other are 　 D. the other is

　　[答案] A。 rest 可以代替可数名词也可以代替不可数名词，谓语用单数还是用复数就看它代替的是什么名词了。

　　[29] We were about to leave the classroom _____ it began to rain.

　　A. while 　 B. when

　　C. as 　 D. before

　　[答案] B。 be about to do sth. when "…正要干某事，这时…"。

　　[30] After we walked ______ the forest, and ______ a river, we arrived at that small village.

　　A. across; across 　 B. through; across

　　C. across; through 　 D. through; through

　　[答案] B。 穿过两边有高度的地方用介词through;穿过广阔的海洋，沙漠，平原用across。

　　[31] Please say "Hi" to Bob ______ me.

　　A. to 　 B. for

　　C. about 　 D. from

　　[答案] B。 请你代我向某人问好应用say Hi to sb. for me。

　　[32] _____ is the population of your country?

　　A. How 　 B. what

　　C. How many 　 D. How many

　　[答案] B。 就名词population提问"多少"时，可用what或how large。

　　[33] What _____ to Joan last night? What did she cry for?

　　A. was happened 　 B. happened

　　C. was happening 　 D. had happened

　　[答案] B。 昨天晚上发生了什么事，一般用过去时态;happen不能用被动语气。

　　[34] Old McDonald gave up smoking for a while, but soon _____ to his old way.

　　A. returned 　 B. returns

　　C. was returning 　 D. had returned

　　[答案] A。 时态题。连词but前后的时态应该基本一致。

　　[35] He wrote to his friends ______ information.

　　A. asked for 　 B. to ask for

　　C. ask for 　 D. asks for

　　[答案] B。 不定式表示目的。

　　[36] Tom kept quiet about the accident ____ lose his job.

　　A. so not as to 　 B. so as not to

　　C. so as to not 　 D. not so as to

　　[答案] B。 so as to 中的to 是不定式符号，不定式的否定形式是将not放在不定式符号之前。

　　[37] He was named Robert _____ his father by mother.

　　A. to 　 B. upon

　　C. after 　 D. under

　　[答案] C。 name sb. after …"根据….的名字命名"。

　　[38] -----I’m going to Beijing nest week. Do you have anything _____ there? ------ No, but thank you all the same.

　　A. taken 　 B. to take

　　C. taking 　 D. to be taken

　　[答案] D。 该句的主语you发不出take的动作，故用被动形式。

　　[39] The heavy snow stopped the farmers ______ in the fields.

　　A. working 　 B. work

　　C. to work 　 D. works

　　[答案] A。 stop sb. (from) doing sth. 阻止某人做什么。

　　[40] The result of the experiment was very good, _____ we hadn’t expected.

　　A. when 　 B. that

　　C. which 　 D. what

　　[答案] C。 非限制性的定语从句，which代替前面的句子。

　　[41] She reached the top of the hill and stopped ______ on a rock by the side of the path.

　　A. to have rested 　 B. resting

　　C. to rest 　 D. rest

　　[答案] C。 不定式表示目的。

　　[42] Whom can you trust, if not _______ ?

　　A. himself 　 B. he

　　C. him 　 D. his

　　[答案] C。 这儿是个省略句，作宾语。

　　[43] In the USA, he made a lot of friends ______ English well to make himself ______.

　　A. learn; understand 　 B. to learn; understood

　　C. learning; understand 　 D. learned; understood

　　[答案] B。 第一个空是不定式作目的状语;第二个空是过去分词作宾补。

　　[44] He kept the light in his room ______ the whole night.

　　A. burnt 　 B. burning

　　C. burn 　 D. to burn

　　[答案] B。 现在分词短语作宾补。

　　[45] The world is _____ seven continents and four oceans.

　　A. made up of 　 B. made out of

　　C. made from 　 D. made in

　　[答案] A。 be made up of表示由什么组成;be made of/ from/ out of表示由制成。

　　[46] We started early ______ before dark.

　　A. in order to reach 　 B. in order that arrived

　　C. so as to arrive 　 D. so that got to

　　[答案] C。 不定式表示目的;reach是及物动词要跟宾语。

　　[47] Be sure to ______ your wife when we go to the party this evening.

　　A. bring 　 B. take

　　C. get 　 D. carry

　　[答案] A。 bring带来;take带走;carry去取来。

　　[48] They will complete the work ______.

　　A. after a few weeks’ time 　 B. in a few weeks’ time

　　C. after a few weeks’ time 　 D. in a few week’s time

　　[答案] B。 在将来时态的句子中，时间状语一般用in引导的短语。

　　[49] When and where to build the new factory ______ yet.

　　A. is not decided 　 B. are not decided

　　C. has not decided 　 D. have not decided

　　[答案] A。 不定式短语做主语谓语动词用该用单数。

　　[50] I need one more stamp before my collection ______.

　　A. had completed 　 B. completes

　　C. has been completed 　 D. is completed

　　[答案] D 主句是将来时态(包括含有情态动词)，时间或条件状语从句中用现在时态