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My parents never remember my telephone number, and they always look it up. A. must B. can C. should D. have to 【查看更多】

 

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 My parents never remember my telephone number, and they always ______ look it up.
   A. must              B. can            C. should               D. have to

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 My parents never remember my telephone number, and they always ______ look it up.

   A. should           B. can           C. have to            D. must

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My parents never remember my telephone number, and they always ________ look it up．

[　　]

A．must

B．can

C．should

D．have to

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