Mr. Smith would have come to see you if it had been possible, but he so busy.A. wasB. ha

发布时间：2020-08-16 07:57:46

Mr. Smith would have e to see you if it had been possible, but he      so busy.
A. was
B. had been
C. has been
D. were

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(答案→)A. was
B. had been
C. has been
D. were
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