You can’t imagine that a well-behaved gentleman be so rude to a lady.A. shouldB. mustC.

问题补充：

You can’t imagine that a well-behaved gentleman be so rude to a lady.

A. should

B. must

C. might

D. would

答案：

(答案→)A. should

B. must

C. might

D. would

解析：句意:你想象不出这么彬彬有礼的绅士竟然对这位女士如此粗鲁。should表吃惊；must 表必须； might表可能； would表意愿。根据句意故选A。