It's nearly seven o'clock . Jack _____ be here at any moment . 
#90391
A
must
B
need
C
should
D
can
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 Their answers are exactly the same — one of them ______ from the other.
#88171
A
must copy
B
must have copied
C
should copy
D
should have copied
Let’s clean the classroom, ________?
#89484
A
won’t you
B
shall we
C
do we
D
will not you