"You ___ not be too careful in the exam. Do and check your papers carefully and
题型:河北省期中题难度:来源:
"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; should
答案
B
举一反三
I didn’t hear the telephone. I _______ asleep.
[ ]
A. must be B. must have fallen C. would have been D. should have fallen