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
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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