Question

【题目】

（2012 福建漳州期中）I happened __________ with him when he was hit by a stone.

A. I was talking

B. talking

C. to talk

D. to be talking

Answer 1

【答案】D

【解析】句意:他被一块石头击中时，我碰巧正在和他谈话。碰巧正在做某事happen to be doing。