1. He ought___ have done so even though possible.

A. not to   B.to not   C. not   D. never

2. I have been writing the report for 3 hours.I ___it half an hour ago.

A.ought finish   B.ought to finish   C.ought have finished    D.ought to have finished

3. - Little Lily didn’t come to the party yesterday.

    -I___her last night, but I was too busy.

A.should telephone   B.had to telephone   C.should have telephoned    D.ought to telephone

4. We ______ throw the rubbish into the bin. 

A. should    B. ought to    C. may    D. would 

5. Parents ______ raise their children until they are 18. 

A. should   B. ought to    C. may    D. would 

6.  They ______ discuss it now. 

A. ought to not    B. not ought to    C. don't ought to    D. ought not to 

7.   ______ he ______ his parents about this problem? 

A. Should, listens    B. Ought, listens to  C. Should, listen to    D. Ought, listen to 

8.Everybody is working hard.There ________be trouble in finishing the work on time.

A.ought not to           B.needn't             C.mustn't                      D.ought to not

9.  You ______ buy the ticket before getting on the train.

 A. ought   B. should    C. mustn’t    D. can’t 

10. To protect our eyes, we ______ keep enough distance from books when we read them. 

A. shouldn't   B. ought not   C. ought not to  D. ought to  

11.  He said such a thing ______ be allowed happen. 

A. oughtn't to    B. might not    C. may not    D. needn't

12.  Ought we to clean the classroom now? -- Yes, we ______.  

A. ought  to  B. should    C. must    D. can  

13. Tom ought not to ____ me your secret, but he meant no harm.

A. have told   B.tell      C.be telling   D.having told

14. You ought to go by sea , _____ ?

A.ought you  B. shouldn't you   C.don't you     D. won't you

15. I ______ it if I had enough money.

A. should have bought  B. should buy  C.ought to buy  D. ought having buy

答案：1—5 ADCBB  6—10 DCABD    11—15 AAACA