The passenger was very impolite to the conductor of course made things evenworse.A. wh

问题补充：

The passenger was very impolite to the conductor, , of course, made things even

worse.

A. who

B. whom

C. which

D. what

答案：

A. who

B. whom

(答案→)C. which

D. what

解析：可联系答.案.网客服索取。