-Is the man over there your English teacher ?No it be him. He has gone to Canada to s

问题补充：

-Is the man over there your English teacher ?

--No, it be him. He has gone to Canada to study further.

A. mustn

B. can

C. won

D. needn

答案：

A. mustn

(答案→)B. can

C. won

D. needn

解析：此题考查情态动词表示推测，根据语境可知是否定性推测故用can’t。