The man be my father. My father is much taller.A. canB. mustC. cantD. mustnt

问题补充：

The man be my father. My father is much taller.

A. can

B. must

C. can

D. mustn

答案：

A. can

B. must

(答案→)C. can

D. mustn

解析：考查情态动词。对某事的否定用can’t。