问题
选择题
I happened_______with him when he was hit by a stone.
A．I was talking
B．talking
C．to talk
D．to be talking
答案
答案：D
考查非谓语动词。happen to do碰巧做，根据句意用不定式的进行时。句意：当他被一块石头击中的时候，我碰巧在跟他谈话。
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I happened_______with him when he was hit by a stone.
A．I was talking
B．talking
C．to talk
D．to be talking
答案：D
考查非谓语动词。happen to do碰巧做，根据句意用不定式的进行时。句意：当他被一块石头击中的时候，我碰巧在跟他谈话。
