Question

While we ________ cards happily, the electricity ________ suddenly．

1. A.
   played…was cut
2. B.
   were playing…was being cut
3. C.
   played…cut
4. D.
   were playing…was cut

Answer 1

D
这句句子的意思是“当我们玩牌玩得正高兴时，突然停电了。”由while引导的时间状语一定是进行时态，这句句子显然是发生在过去的时间，那么就是过去进行时了，而后面的主句则是瞬间的动作，用一般过去时。