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(   ) 4. My brother broke the MP3        he bought yesterday.

   A. whom   B. whose   C. which   D. who

(   ) 3.        I want to give up,my teacher always encourages me        harder.

   A. However,studying   B. Whoever,to study

   C. Whatever,study   D. Whenever,to study

(   ) 2. ―Bill,you look tired today. What's wrong?

    一I was        busy        I didn't go to bed until midnight yesterday.

   A. so,that   B. such,that   C. too,to   D. enough,to

(   ) 1. ―I wonder if he        us in the discussion tonight.

      ―I believe if he        his homework,he will join us.

   A. will join,will finish   B. will join,finishes

   C. joins,finishes   D. joins,will finish

(   ) 20. ―May I put my bike here?

       ―No,you         .

   A. needn't   B. don't   C. mustn't   D. won't

(   ) 19. A computer        think for itself. It must be told what to do.

   A. can't   B. couldn't   C. may not   D. might not

(   ) 18. —Shall I tell John about it?

       ―No,you         . I've told him already.

   A. mustn't   B. can't   C. needn't   D. shouldn't

(   ) 17. John,you        play with the knife. You        hurt yourself.

   A. won't,can't   B. mustn't,may

   C. shouldn't,must   D. can't,shouldn't

(   ) 16. The fire spread through the hotel very quickly but everyone        get out.

   A. had to   B. would   C. could   D. was able to

(   ) 15. ―Will you stay for lunch?

       ―Sorry,I      . My brother is coming to see me.

   A. mustn't   B. can't   C. needn't   D. won't