He must have finished the work yesterday he ?A. mustn'tB. haven'tC. didn'tD. hasn't

问题补充：

He must have finished the work yesterday, he ?

A. mustn

B. haven

C. didn

D. hasn

答案：

A. mustn

B. haven

(答案→)C. didn

D. hasn

解析：当陈述部分是must\may have done sth.时，如果有表示过去的时间状语，就用过去时来反问；如果没有表示过去的时间状语，就用现在完成时来反问.