------I don’t know why he has made such a silly mistake in the exam.
------ He ____________ it before he handed in the paper.
A.may have checked | B.might check |
C.must have checked | D.should have checked |
推荐试卷
------I don’t know why he has made such a silly mistake in the exam.
------ He ____________ it before he handed in the paper.
A.may have checked | B.might check |
C.must have checked | D.should have checked |
试题篮
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