You can't imagine that a well－behaved gentleman be so rude to a lady.A. mightB. needC. sh

问题补充：

You can imagine that a well－behaved gentleman be so rude to a lady.

A. might

B. need

C. should

D. would

答案：

A. might

B. need

(答案→)C. should

D. would

解析：

should用于表示感情，意向等句中的that从句，表示“竟然……，居然……”，出乎意料。