Could you please_____ the piano so loudly? Your brother is having a rest now.
#74747
A
not to play
B
not play
C
don’t play
D
to not play
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Don’t use water to put out the fire if oil catches fire. As is known, oil ____ float on water.
#63170
A
shall
B
must
C
may
D
will
I ______have come here in time, but I met an old friend of mine. I stopped and talked with him for some time.
#62761
A
shouldn’t
B
must
C
needn’t
D
could