— Is your brother at singing ? —No. But he really does in dancing .A. good; goodB. well;

问题补充：

— Is your brother at singing ?

—No. But he really does in dancing .

A. good; good

B. well; well

C. good; well

D. well; good

答案：

A. good; good

B. well; well

(答案→)C. good; well

D. well; good

解析：句意:-你的哥哥擅长唱歌吗？-不，但是他在跳舞上表现很好。本题考查的是形容词和副词的用法，这两个空都是固定的短语，be good at 擅长；do well in 在某方面表现得好。两个短语是相同的意思，后跟名词或动词的ing形式。故选C。