Question

He ________ his leg when he ________ in a football match against another school．

1. A.
   broke; played
2. B.
   were breaking; was playing
3. C.
   broke; was playing
4. D.
   was breaking; played

Answer 1

C
broke用一般过去时表示过去某一时刻曾经发生的动作，在有when引导的表示过去的时间状语从句中，持续时间长的动作一般用过去进行时。这里表示“在踢球时”摔坏了腿，所以后一空应用过去进行时。