. “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.
A. must; should
B. can; shall
C. must; shall
D. can; could
网友回答
A. must; should
(答案→)B. can; shall
C. must; shall
D. can; could
解析：考查情态动词，第一空考查can not…too，再怎么也不为过，第二空考查shall用于第二人称表示规定，句意：老师在考试前告诉我们：考试中你再小心也不为过，一定要仔细检查试卷，考试后不能把试卷带出考场。选B。