He speaks English an American so we all think he stays in America for many years.A. as g

问题补充：

He speaks English an American, so we all think he stays in America for many years.

A. as good as

B. worse than

C. as badly as

D. as well as

答案：

A. as good as

B. worse than

C. as badly as

(答案→)D. as well as

解析：as……as……和……一样，修饰动词应用副词，所以选D。