Students_____spend much time on computer games. [ ]A. should B. shou

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Students_____spend much time on computer games.     [     ]
A. should
B.  shouldn"t
C.  have to
D.  don"t have to

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举一反三

—What"s John going to do next Saturday?
—I am not sure.  He_____ go to the country to see his aunt.        [     ]
A. can
B. must
C. may
D. will

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You________smoke here. It"s dangerous.    [     ]
A. needn"t
B.  couldn"t
C.  mustn"t
D.  might not

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—Can you Play cards?
—_____. [ ]
A. yes, I do
B. yes, I can"t
C. No, I can"t
D. No, I don"t

题型：期末题难度：| 查看答案

-Will you stay for supper?
-Sorry, I __________. My sister is coming to see me.[ ]
A. shouldn"t
B. needn"t
C. can"t
D. mustn"t

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用方框中所给短语的适当形式填空.

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