—Whathappenedtothepostman?—Ido

—What happened to the postman?
　 —I don't know. He______ around here for a long time.

A．hasn'tseen

B．didn'tsee

C．wasn'tseen

D．hasn'tbeenseen

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A．must finish

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D．must be finished

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A．were

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C．are

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--- “I got caught in traffic; otherwise _____ sooner.”

A．I would be here	B．I have been here
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A．hadn’t had finished	B．didn’t have finished
C．couldn’t have finished	D．can’t have finished

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A．may not make	B．might not make
C．shouldn’t have made	D．might not have made

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