3. An accident , _______occur the other day.

A. did　　　 B.do　　 C. will　　 D. had to

2.Such a problem exists because adequate measures for preventing it _______taken in the past.

A. was not　　 B. has not　　 C. were not　　 D. had not been

1.We should do more such exercises in the future , I think, ______those we did yesterday.

A.as　 B.like　 C.about　 D.than

14. 抓关键词(短语)法,抓住“题眼”

13.注意连词的一词多义的使用(连词的一次多用法)

(1)How can they learn so much __________they spend such a lot of time hanging about ?

A.although　 B.when　 C.before　 D.until

(2)-_______advertisemnets are of great help , I don’t think we should rely on them entirely.

A.since　 B.because　 C.while.　 D.as

.注意：

when :当……的时候；既然；这时突然；在……之后；虽然然而可是；

Call me when you have finished在……之后

She claimed to be eighteen , when I know he is only sixteen. 虽然然而可是

While：当……的时候；然而；尽管虽然

before在……之前；还没来得及，还未……就；才；不到……就；趁着还没有……就；

as：虽然，用于倒装；正如；按照；随着；一边一边；由于，因为；介词作为

12.区分短暂性动词与延续性动词的正确使用

(1)-How long have you been there?

-______the end of　 last month.

A.In　 B.By　 C.At　 D.Since

(2)until 用于肯定句， 主句用延续性动词；用于否定句，主句用短暂性动词

I will wait until he comes back.

I won’t leave until he comes back.

(3)since 与短暂性动词连用，“自从做某事多长时间了”

since 与延续性动词连用，“自从不做某事多长时间了”

It is three years since I began to smoke.

It is three years since I smoked.

(4)while 从句的动词须用延续性动词

6. This is the main use that the scientists make _______natural resources.

A. in　　 B. up of　　 C, from　　 D. of

5. The majority of people here agree that there_____a bus stop near the house will be a great advantage.

A. was　　 B. have been　 C. having been　　 D. being

4. It is said that the footballer is willing to play for ________will pay him three million dollars per year.

A. whoever　 B.　 whomever　 C.anyone　　　　　 D.　 no matter who　

3.Please tell me the way you thought of__________the garden.

A.take care of　 B.to take care of　 C.taking care of　 D.how to take care of