6. He’s unlucky, and he’s always suffering _____ luck one after another.

A. a sick　 　　B. an ill　　 C. sick　　 　D. ill

选D。 ill意为“生病”不可作定语；但意为“坏的，恶劣的”可作定语，在此修饰不可数名词luck。

5. ______ part that women _______ in society is great.

A. The; play　 B. A; take　 C. A; play　 D. The; take

　 选A。词组paly… a part in(起……的作用)分开使用了。Part在这里是特指，由定语从句所修饰，所以用the。

4. He arrived here at noon, 　　　in the day, and he went out and came back 　　　in the day.

A. late; late　　　 B. late; later

C. later; late　　　 D. later; later

选C。later 为副词，意为“后来”，come back late “回来晚了”。

3. You are really very kind. I’ll never forget the 　　　you have done to me.

A. favour　　　 B. deed

C. help　　　　 D. good

选A。本题主要是对词义及搭配的考查。favor的意思是“恩惠，善意的行为”。do sb. a favor或do a favor for sb. 的意思是“帮某人一个忙”，因此本题的正确答案选A。

2.A computer is so useful a machine ________ we can use everywhere.

　A. that　 B. which　 C. as　 D. what

选C。本题考查句子结构和关系代词的选用。首先表示认清句子结构，use后面应该接一个及物动词，先行词应该充当宾语，而前面出现so useful不能用that与which来修饰，可以排除。另外，what 不能引导定语从句。

1.- Why didn’t you come to Mike’s birthday party yesterday?

　　 - Well, I ____, but I forgot it.

A. should　 B. must C. should have　 D. must have

　选C。should have的后面省略了come。should have come表示“本应该而实际上没有”。

20.---You should have thanked her before you left.

　 ---I meant _______. But when I was leaving I couldn’t find her anywhere.

A. to do　 B. to　 C. doing　 D. doing so

　 选B。本句中的meant意思是“本来打算”应该使用不定式。当与want, wish, hope, like, hate, try, have, ought, used, need, be able, be going, be glad, mean等连用时， to代替不定式结构以避免重复。

19.Hawking became world-famous in _______.

A.　　 his thirties in the 1970’s

B.　　 the thirties in his 1970

C.　　 his 30s in 1970’s

D.　　 the thirties during the 1970

　 选A。in one’s thirties 在某人三十多岁时，in/during the 1970s意思是“在二十世纪七十年代”。

18. It is thought that one billion people I the world, 　_　 　is half the word’s workers, earn their living by farming.

A. if　　 B. that　　 C. which　 D. what

选B。句中“half the world’s workers”是对“one billion people in the world” 的补充说明， “that is”是 “that is to say”的省略说法，是插入语，that 并不是引导非限制性定语从句的，如果在 “that is”后加个逗号则更清楚，应选B。

17. I think whoever makes 　　　contributions to the company than the others should get 　　　income.

A. greater; a highest　　

B. more greater; a higher

C. greater; the highest　

D. more greater; the higher

选C。more 不可修饰比较级，排除B和D。greater … than the others 是最高级意义，后面也用最高级，且最高前要用定冠词the。