-Is Meimei good? -Yes I think so.A. for singingB. at singingC. to singing D. in singing

问题补充：

-Is Meimei good? -Yes, I think so.

A. for singing

B. at singing

C. to singing

D. in singing

答案：

A. for singing

(答案→)B. at singing

C. to singing

D. in singing

解析：句意：美美擅长唱歌吗？是的，我想是吧。Be good at doing sth.擅长做这么事情，故选B。