问题补充：
Liu Ying is good at singing. She sings the famous singer.
A. as well as
B. as good as
C. as better as
D. as the best as
答案：
(答案→)A. as well as
B. as good as
C. as better as
D. as the best as
解析：句意：刘莹擅长唱歌。她唱的跟著名歌手一样好。As + 形容词或副词原级 + as，表示前者与后者在某方面一样。本题中所填词修饰动词sings作状语，该用副词。所以选A。
