------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
If the south had won the war, what is now the United States _____ divided into several countries.
#89150
A
will be
B
might have been
C
should be
D
must have been
---Mike must have known that.---No, he ________. How _______ he?
#87806
A
mustn’t, must
B
may not, might
C
couldn’t, can
D
needn’t, need
Had it not been for the haze（霾）weather phenomenon, there fewer car accidents in Beijing then．
#86816
A
would have been
B
were
C
may be
D
would be
-----How dangerous it was !-----Yes, but for the young man’s quick action, he run over by the car.
#86369
A
should have been
B
would be
C
could have been
D
might be
Thank you for all your hard work last week. I don’t think we ______ it without you.
#90484
A
can manage
B
could have managed
C
could manage
D
can have managed