—Would you have told him the answer had it been possible? —I would have but I so busy the

问题补充：

—Would you have told him the answer had it been possible?

—I would have, but I so busy then.

A. had been

B. were

C. was

D. would be

答案：

A. had been

B. were

(答案→)C. was

D. would be

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