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

分包单位应当服从建筑施工总承包单位的安全生产管理，分包单位不服从管理导致生产安全事故的，由分包单位承担（）责任。

A.全部

B.主要

C.次要

D.连带