To make our hometown more beautiful, you ________ throw rubbish into the river．


  1. A.
    needn't
  2. B.
    mustn't
  3. C.
    must
  4. D.
    may
B
表示“不準，禁止”時要用mustn't。
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科目：初中英語 來源： 題型：013

桯ow hard this job is!

　　梇ou should make more persons __________ you.

　　A.help　　B.to help　　C.helping　　D.be helped

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