专项练习

1.He is very old，______he still works very hard.

A.but　B.if　C.when　D.as

2.______you are dismissed.

A.Neither you go nor　B.Either you go or

C.Whether you go or　D.Both you go and

3.They had camped once before，______they knew what to take.

A.because　B.now　C.so　D.since

4.Why these things happened was ______the driver had been careless.

A.because of　B.owing to　C.due to　D.that

5.Although，it’s raining，______are still working in the fields.

A.they　B.but they　C.and they　D.so they

6.______we have satisfied you，you have no grounds of complaint.

A.So　B.Since that　C.Now that　D.By now

7.Write clearly ______your teacher can understand you correctly.

A.since　B.for　C.because　D.so that

8.You’ll miss the train ______you hurry up.

A.unless　B.as　C.if　D.until

9.Francis did the task______his brother.

A.as good as　B.as better as　C.as well as　D.as best as

10.The size of the audience，______we had expected，was well over twenty thousand.

A.as　B.what　C.that　D.whom

11.I thought he hated the TV.You are right，______he still watches the program.

A.yet　B.besides　C.also　D.then

12.It looks ______it’s going to rain.

A.that　B.as　C.as if　D.like that

13.______to New York，her father has not heard from her.

A.Because she went　B.After she went

C.When she went　D.Since she went

14.______he daydreamed，Peter saw figures in the sky.

A.Until　B.Since　C.While　D.During

15.We arrived at the station ______the train had left.

A.after　B.before　C.since　D.when

16.______he was in poor health，he worked just as hard as everyone else.

A.But　B.Although　C.Even if　D.If

17.Give me one more minute ______I’ll have finished.

A.so　B.until　C.and　D.when

18.The worker hunted for jobs in New York for months，______he could not find any work.

A.and　B.yet　C.or　D.and but

19.Hurry up，______you’ll be late.

A.or　B.and　C.so　D.yet

20.Do not make the same mistake ______I did.

A.so　B.as　C.like　D.that

21.My sister is expecting me，______I must be off now.

A.however　B.or　C.so　D.otherwise

22.We should pay attention ______to industry ______to agriculture.

A.either；or　B.neither；nor　C.not；but　D.both；and

23.He ran off______I could stop him.

A.before　B.after　C.since　D.when

24.______you told me，I had heard nothing of what happened.

A.Till　B.Until　C.After　D.Since

25.Where have you been ______you left home？

A.before　B.as　C.since　D.when

26.______the problem of method is solved，talking about the task is useless.

A.Until　B.Since　C.After　D.Unless

27.We have produced 15% more cotton this year______we did last year.

A.as　B.than　C.like　D.white

28.It is late，______，I’m too tired to go out.

A.besides　B.except　C.except for　D.except that

29.Everything around us is ______solid and liquid ______gas.

A.not…but…　B.either…or…　C.neither…nor…　D.whether…or…

30.He will come ______you ask him.

A.whether　B.unless　C.if　D.while

参考答案：

1-5 ABCDA 6-10 CDACA 11-15 ACDBA

16-20 BCBAB 21-25 CDABC 26-30 BBABC