The light is still on. They ___ to turn it off when they left the room.
#87772
A
must forget
B
could have forgotten
C
may forget
D
must have forgotten
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I’m afraid we        give you an answer today.
#87598
A
can’t
B
mustn’t
C
needn’t
D
shouldn’t
---- If he had been warned, he ______ that food yesterday.---- Luckily he was sent to the hospital immediately.
#87412
A
would not take
B
would not have taken
C
had not taken
D
didn’t take
Online paper-checking requires that more attention _______.
#89641
A
be paid to spelling
B
to be paid to spelling
C
should pay to spelling
D
and spelling be paid to