问题补充:
He doesn’t do his homework. So he always makes some mistakes.
A. careful enough
B. enough careful
C. carefully enough
D. enough carefully
答案:
A. careful enough
B. enough careful
(答案→)C. carefully enough
D. enough carefully
解析:修饰动词do要用副词carefully,且enough要放在所修饰的副词后面,所以选C。