问题补充：
Youll make mistakes than the other students if you are careful enough.
A. fewer
B. more
C. less
D. many
答案：
(答案→)A. fewer
B. more
C. less
D. many
解析：句意：如果你是足够的认真，你将会犯更少的错误比其他同学。本题出现比较级的标志than 前面的mistake错误是可数名词，更少的错误要用few修饰，而less 是修饰 不可数名词的。故选A.
