11. The chairman thought ____ necessary to invite

　　　　　　 Professor Smith to speak at the meeting. (2005 全国)

A. that　　　　　　 B. it

C. this　　　　　　　　 D. him

[解析]选B　 it作形式宾语，代替不定式。

　 依赖、依靠、由于、因为”等意思。它引导的短语，可

　 以表达正面意思(近于原意“感谢”)，也可用于讽刺

　 口吻中(近于讽刺口吻的“感谢”。)它引导的短语在

　 句中用作状语时，大多放在句首，但也可以置于句

　 末。

　 Thanks to your help, passed the test.

　 幸亏有你的帮助，我测验及格了。(正面意思)

10. -- Dad, I've finished my assignment.

　 -- Good, and ____ you play or watch TV, you

　 mustn't disturb me. ( 2003 上海)

A. whenever　　　　　 B. whether

C. whatever　　　　　 D. no matter

[解析]选B　 whether...or...引导让步状语从句；=

no matter whether ... or

9. Although the working mother is very busy, she

　 still ____ a lot of time to her children. (NMET

　 2000)

　 A. devotes　　　　　　 B. spends

　 C. offers　　　　　　　 D. provides

[解析]选A　 devote...to为固定搭配。

8. -- The cars give off a great deal of waste gas into

　　 streets.

　　 -- Yes. But I'm sure something will be done to

　　 -- ____ air pollution.

A. reduce　　 　　　　　B. remove

C. collect　　　　　　 D. warn

[解析]选A　 reduce pollution 减少污染。

7. The poor young man is ready to accept ____

　　 help he can get. (2005 全国)

　　 A. whichever　　 B. however

　 　C. whatever　　 D. whenever

　　 [解析]选C　 whatever引导的宾语从句。whatever

help = any help that...。

6.(　　 ) I wonder how he ____ that to the teacher.

　　 A. dared to say　　 B．dare~ying

　　 C. dares say　　 D. dared say

　　 [解析]选A　 dared在此是情态动词的过去式。

5.(　　 ) The American Civil War lasted four years ____

　　 the North won in the end. (2005 广东)

　　 A. after　　 B. when

　　 C. before　　 D. then

　　 [解析]选C before“过了(四年)才……”。：

4.(　　 ) -- It's cloudy outside. Please takc an ubrella.

　 -- ____.　 (2005湖南)

　 A. Yes, take it easy

　 B. Well, it just depends

　 C. OK, just in case

　 D. All right, you're welcome

　　 [解析]选C　 just in case = in case it rains 带把雨伞以

防下雨。

3. -- How long are you staying?

　 -- I don't know ____. (2004 江苏)

　 A. That's OK　　 B. Never mind

　 C. It dedends　　 D. It doesn't matter

　　 [解析]选C　 根据上文I don't know.，可确定要选

C，表示要随情况而定。

2. -- Brad was Jane's brother!

　　 -- ____ he remlnded me∞mHch()f Jane!

　　 (2004 浙江)

　　 A. No doubt　　 B. Above all

　　 C. Nowonder　　 D. Of course

　　 [解析l选C　 no wonder“难怪”，因为Brad是Jane的

兄弟，他经常提到Jane就没什么奇怪的了。