—Listen!Thereisaknockonthedoor

—Listen! There is a knock on the door． Who _____ it be?
—It must be Jack． Just now I sent for him．

A．shall

B．can

C．must

D．might

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相关试题

More measures should be ______ to protect the natural resource.

A．made

B．taken

C．had

D．done

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Tell John not to leave the house unless he that the lights .

A．will make sure，turn off	B．makes sure，are turned off
C．will make sure，will turn off	D．makes sure，will be turned off

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Mrs．Brown is so about her housework that few servants Want to work for her．

A．skillful

B．neat

C．particular

D．special

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After you have used the dictionary，please just put it back it belongs．

A．to whom

B．to which

C．what

D．where

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We were badly treated in the hospital.
Don’t worry.The president has promised to ______ your complaint at once.

A．look up

B．look into

C．look back on

D．look forward to

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