题目内容
"You ___ not be too careful in the exam. Do and check your papers carefully and you ____ not take
your papers out of the examination room after the exam." the teacher told us before the exam.
your papers out of the examination room after the exam." the teacher told us before the exam.
[ ]
A. must; should
B. can; shall
C. must; shall
D. can; should
B. can; shall
C. must; shall
D. can; should
B
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