Lucy is good at playing the piano.A. is good forB. is bad forC. does well inD. does bad in

问题补充：

Lucy is good at playing the piano.

A. is good for

B. is bad for

C. does well in

D. does bad in

答案：

A. is good for

B. is bad for

(答案→)C. does well in

D. does bad in

解析：句意：莉莉擅长弹钢琴。 be good at = do well in擅长做……，在某方面做的好 ，故选C。