11. He will not be__________to vote in this year’s election.

A. old enough

B. as old enough

C. enough old

D. enough old as

12. Were it not for friction, we__________to walk on this planet of our own.

A. would not be able

B. should not have been able

C. were not able

D. are not able

13.__________will Mr. Forbes be able to regain control of the company.

A. With hard work

B. In spite of his hard work

C. Only if he works hardly

D. Only with hard work

某些副词置前要倒装，如only , so , then ; only在修饰状语时才倒装；

14. Not__________ did she refuse to speak to Jim, but also she decided never to see him again.

A. even

B. only

C. at all

D. always

15. So badly__________in the accident that Smarton was delayed in the howpital for treatment.

A. did he injure

B. he injured

C. was he injured

D. he was injured

16. On no account__________to anyone else.

A. my name must not be mentioned

B. must my name not be mentioned

C. must my name not mention

D. my name must not mention

17. Had Christina arrived 5 minutes earlier, she__________ the train.

A. would catch

B. could catch

C. could have caught

D. would be able to catch

18.__________I shouted at the top of my voice did Lily turn her head.

A. Until

B. Not until

C. It was not until

D. Only until

19. Rarely__________such a silly thing.

A. I heard of

B. have heard I of

C. have I heard of

D. have heard of I

20.__________do we suspect that this district is rich in mineral resources.

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