问题
选择题
He speaks English well indeed, but of course not __________ a native speaker.
A as fluent as B more fluent than C so fluently as D much fluently than
答案
：C
：考查形容词用法。句意：他的英语将的很好，但是当然不如本地人那么好。首先应该使用副词，修饰动词speak，排除AB。D选项应该用比较级。故C正确。