–Why do you look so sad?-Bad luck! I made some mistakes in the test. I was not .A. enough

问题补充：

–Why do you look so sad?

-Bad luck! I made some mistakes in the test. I was not .

A. enough careful

B. enough careless

C. careful enough

D. careless enough

答案：

A. enough careful

B. enough careless

(答案→)C. careful enough

D. careless enough

解析：词义辨析。句意：你为什么看起来如此难过？倒霉！测试是我犯了一些错误。我不过仔细。排除B和D。enough放在所修饰的形容词后。所以选C。