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

A. broke, played  B. was breaking, was playing  C. broke , was playing D. was breaking, played

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

　 A. broke; played 　 B. was breaking; was playing

　 C. broke; was playing 　 D. was playing; broke

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