But for friction (摩擦力), people ______ neither walk, nor even stand up.

试卷相关题目

• 1---What does the sign over there read? ---"No person_______ smoke or carry a lighted cigarette, cigar or pipe in this area．"

  A.shall

  B.may

  C.must

  D.Will

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• 2For environmental reasons, we ________ as well take these waste products and have them recycled．

  A.should

  B.would

  C.might

  D.could

  开始考试点击查看答案
• 3The elderly lady wonders if her long lost son can still be back alive．Such things ________ and do happen．

  A.can

  B.must

  C.will

  D.need

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• 4My TV had just been repaired, so I _________ to the pub to watch the World Cup final match last night．

  A.needn't have gone

  B.didn't need to go

  C.needn't have gone

  D.mustn't have gone

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• 5---Is that Miss Liu having dinner over there? ---It______ be her. She has gone to New York for an important business meeting.

  A.mustn't

  B.needn't

  C.can't

  D.shouldn't

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• 6When he was there, he ________ go to that coffee bar after work every day．

  A.was to

  B.would

  C.might

  D.should

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• 7It's amazing that you ________ know that!I haven't mentioned that before you．

  A.can

  B.do

  C.shall

  D.should

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• 8He described the town as if he__________ it himself.

  A.had seen

  B.has seen

  C.saw

  D.sees

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• 9People feel shocked that a university student _________ do that to a woman．

  A.must

  B.may

  C.can

  D.should

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