-----How did you think of the job he did last week ?
-----Well done. .
A. It couldn’t be worse
B. It should be better
C. It couldn’t have been better
D. It was worse
网友回答
A. It couldn’t be worse
B. It should be better
(答案→)C. It couldn’t have been better
D. It was worse
解析：考察形容词用法。本句指考察的是形容词的比较级和否定词连用，表示最高级的含义。句意：—你认为上个星期他的工作怎么样？-做的好。再好不过了。本句中的否定词和比较级better连用，表示最高级。故C正确。