-----I’ m not good at singing you know.--. It's just for fun.A. All rightB. No proble

问题补充：

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

----- . Its just for fun.

A. All right

B. No problem

C. Come on

D. Cheer up

答案：

A. All right

B. No problem

(答案→)C. Come on

D. Cheer up

解析：考查交际用语：A. All right好的B. No problem没问题C. Come on加油D. Cheer up振作起来，句意：--你知道，我不擅长唱歌。--加油，这只是为了好玩。选C。