问题
选择题
Mr. Smith would have come to see you if it had been possible, but he __________ so busy.
A．was
B．had been
C．has been
D．were
答案
答案：A
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Mr. Smith would have come to see you if it had been possible, but he __________ so busy.
A．was
B．had been
C．has been
D．were
答案：A