–Why,Icouldn’tgetyouonthephone

–Why, I couldn’t get you on the phone this morning.
--We _____ tennis in the yard when you called.

A．must be playing	B．could be playing
C．must have played	D．must have been playing

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相关试题

Since it will take years to know the effect of genetically modified food, it’s more sensible to give it a second thought before we eat it, it?

A．isn’t

B．is

C．won’t

D．will

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Even though she much, the woman multimillionaire insists on working as a street cleanser to set her children a good example.

A．doesn’t pay

B．isn’t paid

C．hasn’t paid

D．hasn’t been paid

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It can never be denied that with a big family results in his quitting school.

A．having burdened

B．being burdened

C．to burden

D．burdening

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They have promised the money collected be handed to the charity house.

A．can

B．must

C．will

D．shall

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There is as good as the taste of a fresh apple, especially in the fall.

A．nothing

B．everything

C．something

D．none

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