29.According to the air traffic rules, you switch off your mobile phone before boarding. ( ) A.may B.can C.would D.should 查看更多

 

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According to the air traffic rules, you ___ switch off your mobile phone before boarding.

   A. may           B. can     C. would            D. should

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According to the air traffic rules, you ___ switch off your mobile phone before boarding.

   A. may                   B. can          C. would               D. should

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According to the air traffic rules, you ___ switch off your mobile phone before boarding.

A.mayB.canC.wouldD.shall

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According to the air traffic rules, you ___ switch off your mobile phone before boarding.

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

 

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According to the air traffic rules, you ____ switch off your mobile phone before boarding.

A. may  B. can   C. would  D. should

 

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