问题补充：
------Did Lisa sing Alice at the corner last night, Tim?
------Oh, it’s hard to say.
A. as good as
B. as well as
C. so well as
D. the same as
答案：
A. as good as
(答案→)B. as well as
C. so well as
D. the same as
解析：“as……as”意为“与……一样”，其中间要用形容词或副词的原形，因sing是动词，所以此处要用副词。
