Candidates remain in their seats until all the papers have been collected. A. must B. shall C. may D. can 查看更多

 

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Candidates ______ remain in their seats until all the papers have been collected.

  A. must            B. shall              C. may              D. can

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 Candidates ______ remain in their seats until all the papers have been collected.

  A. must            B. shall              C. may              D. can

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Candidates ______ remain in their seats until all the papers have been collected.

  A. must            B. shall              C. may              D. can

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 Candidates ______ remain in their seats until all the papers have been collected.

  A. must            B. shall              C. may              D. can

 

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It has been announced that candidates       remain in their seats until all the papers have been collected.

A.shall             B.can              C.should            D.must

 

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