题目内容
________hard before, Tom is afraid of failing in the exam.
|
A.Having been worked |
B.Not to have worked |
|
C.Having never worked |
D.Never have worked |
【答案】
C
【解析】略
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题目内容
________hard before, Tom is afraid of failing in the exam.
|
A.Having been worked |
B.Not to have worked |
|
C.Having never worked |
D.Never have worked |
C
【解析】略