11、Once _____ of the necessity of a move，he worked hard to find a new home.

　　A. convinced

　　B. be convinced

　　C. convincing

　　D. having convinced

　　答案：A

　　12、So many representatives _______ ，the conference had to be put off. 11-15 BCCDB

　　A. were absent

　　B. to be absent

　　C. being absent

　　D. had been absent

　　答案：C

　　13、In no case _____ the students from exploring new ideas.

　　A. we should prevent

　　B. we could prevent

　　C. should we prevent

　　D. shouldn‘t prevent

　　答案：C

　　14、I don‘t think it advisable that Tom _____ to the job since he has no experience.

　　A. be assigned

　　B. is assigned

　　C. will be assigned

　　D. has been assigned

　　答案：A

　　15、With all this work on hand，she ______ to the dance party last night.

　　A. oughtn‘t to go

　　B. hadn’t gone

　　C. shouldn‘t have gone

　　D. mustn’t have gone

　　答案：C

　　16、As Christmas was coming，the town began a ______ clearing on a large scale.

　　A. through

　　B. thorough

　　C. though

　　D. thought

　　答案：B

　　17、E-mail writing has became the usual means of communication _______ people some distance away.

　　A. for

　　B. on

　　C. to

　　C. with

　　答案：D

　　18、It is a good idea for parents to monitor the _____ as well as the kind of television that their children watch.

　　A. number

　　B. size

　　C. amount

　　D. screen

　　答案：C

　　19、I‘m afraid that there isn’t _____ for you in my car.

　　A. place

　　B. seat

　　C. corner

　　D. room

　　答案：D

　　20、It suddenly _____ to me that we could use a computer to do the job.

　　A. happened

　　B. occurred

　　C. agreed

　　D. presented

　　答案：A