问题详情：
He doesn't do his homework . So he always makes some mistakes.
A. careful enough B. enough careful
C. carefully enough D. enough carefully
【回答】
C 解析:考查副词的用法。enough用作副词时,要放在另一个形容词或副词后面,因此排除B、D选项。又因为句中缺少的是状语,修饰do his homework,因此要用副词修饰动词。故*选C。
知识点：副词
题型：选择题
