—Whoitbethatisknockingatthedoo

—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.

A．can; must

B．can; may

C．must; can

D．may; must

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相关试题

If metal is heated and then cooled very quickly, , by dipping in cold water, it will be very hard but will break easily.

A．what’s more

B．in general

C．for example

D．on the other hand

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Mike is excellent in math, _________, he didn’t pass the final exam this time.

A．for example	B．believe it or not
C．as usual	D．as a matter of fact

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The doctor advised her to ______ eating food rich in fat to lose weight.

A．give in

B．give up

C．give away

D．give out

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His story is ______ his own experience when he was studying in Harvard University.

A．based on

B．based in

C．basing on

D．basing in

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His wife ________him to stop smoking, but he didn’t listen.

A．advised

B．persuaded

C．suggested

D．forced

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