摘要：28．------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
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------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
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---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
------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
查看习题详情和答案>>------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 |