问题
单项选择题
John is very diligent, but his pay isn’t sufficient enough for his work.()
A. good
B. much
C. legal
D. sound
答案
参考答案：A
解析：
enough是程度副词，它一般放在它所修饰的形容词或副词之后；例：good enough，warm enough等等；因此A为答案。
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