English is a language that many people around the world _______not speak perfectly but _________at least understand．
#76602
A
may，can
B
would，might
C
can，must
D
should，can
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It_____ years ago when the incident took place, and I nearly forget it.
#62663
A
would have been
B
should have been
C
ought to have been
D
must have been
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
----Must he finish the work before supper?----No, he . He finish it after supper.
#75961
A
mustn’t; may
B
needn’t ; can
C
need; can
D
must; may
I am fond of my sister but she has one serious shortcoming. She _________ be really stubborn.
#63474
A
can
B
may
C
must
D
shall