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
推荐题目
－Shall we go hiking this Sunday? －Sorry, I _______. I’ll have to take a piano lesson.
#74286
A
may not
B
can’t
C
needn’t
D
mustn’t
I don’t know what happened to my pet. It just ________ eat whatever I feed her.
#62854
A
don’t
B
won’t
C
can’t
D
couldn’t
Go and do it right now, and you _____ have my help when in trouble.
#62623
A
will
B
shall
C
should
D
must
The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow.
#62939
A
should
B
must
C
would
D
can
He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
#62950
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t