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
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Jack     his pet dog every day. The dog must feel sad when he’s alone all day long.
#75030
A
should walking
B
should to walk
C
had better walk
D
had better to walk
Do you think the plan _________ out as soon as possible?
#63589
A
should carry
B
ought to be carried
C
ought to have carried
D
ought to have been carried