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--- Why didn’t Mr. Smith arrive on time for the meeting?--- He must have been on

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--- Why didn’t Mr. Smith arrive on time for the meeting?--- He must have been on

--- Why didn’t Mr. Smith arrive on time for the meeting?

--- He must have been ________ on his way here in the traffic jam.

A.held up

B.put up

C.taken up

D.given up

试题答案

A

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