Listen!Someoneisknockingatthed

--Listen! Someone is knocking at the door.
-- ______ be Mary. She has just been to Beijing

A．She mustn’t

B．It can’t

C．It must

D．She may

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--- May I smoke here?
--- If you , choose a seat in the smoking section.

A．should

B．could

C．must

D．may

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A．to improve	B．improved
C．being improved	D．to be improved

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Thanks to Mr. Smith the father and the son eventually________after ten years' cold relationship between them.

A．took up

B．made up

C．looked up

D．turned up

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A．marking

B．marked

C．to mark

D．to be marked

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Under such circumstances, it is little ________ that they experience difficulties.

A．pity

B．shame

C．relief

D．wonder

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