------I don’t know why he has made such a silly mistake in the exam. ------ He ____________ it before he handed in the paper.
#88035
A
may have checked
B
might check
C
must have checked
D
should have checked
推荐题目
(2013·四川高考)—Why are your eyes so red? You ________ have slept well last night.—Yeah, I stayed up late writing a report.
#86578
A
can't
B
mustn't
C
needn't
D
won't
If it were not for the fact that she_______sing, I would invite her to the party.
#90464
A
couldn’t
B
shouldn’t
C
can’t
D
might not
Thank you for giving me so much help. I _______in the experiment without your support.
#87039
A
have failed
B
will fail
C
would have failed
D
must have failed