I’m not good at singing you know! It’s just for fun.A. No problemB. Come onC. W

问题补充：

--- I’m not good at singing, you know.

--- ! It’s just for fun.

A. No problem

B. Come on

C. What a pity

D. Cheer up

答案：

A. No problem

(答案→)B. Come on

C. What a pity

D. Cheer up

解析：交际用语.句意:你知道,我不擅长唱歌.——来吧！只是为了有意思。选B最符合语境。