We have hurried all the way to the airport - the flight was called off because of the foggy weather．
#62846
A
mustn’t
B
couldn't
C
needn’t
D
wouldn’t
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He ______ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
#62659
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t
Johnny’s uncle promises that the boy get a nice present on Christmas Eve.
#62800
A
should
B
must
C
can
D
shall
Cheating is strictly forbidden in this important exam, and students ______ bring any reference books into their classrooms, cell phones included.
#62589
A
will not
B
should not
C
mustn’t
D
need not