The foreigner does speak Chinese well, but of course not we Chinese.
A. as fluent as
B. more fluent than
C. so fluently as
D. much fluently than
网友回答
A. as fluent as
B. more fluent than
(答案→)C. so fluently as
D. much fluently than
解析：修饰动词说用副词fluently，本题的含义是那个外国人汉文说得的确很好，但当然还不及我们中国人好，fluently的比较级为more fluently，故不选D，表示不如可用not so……as，故本题选C。