The light is on in Mr. Green’s room. He _______ be at home.
#77781
A
must
B
can
C
mustn’t
D
can’t
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What way can you think of ______ the mice in the room?
#78055
A
how to kill
B
to kill
C
killing
D
killed
Today, we _____ work as hard as people did in the past.
#76507
A
mustn’t
B
can’t
C
shouldn’t
D
don’t have to
 “Not having returned home yet, _________”, his father said to the police.
#63543
A
his mother got worried
B
his mother must be worried
C
I think he is missing
D
he must have got into some trouble.