Question

He ______busy yesterday,or he______you with your experiment.

1. A.
   was;had helped
2. B.
   was;would have helped
3. C.
   had been;would have helped
4. D.
   were;would have helped

Answer 1

B
该题根据交际情景考查时态的用法。第一句有明确的时间状语yesterday，故用过去时。后一句表示过去的动作并没有发生，故用“would have done”。