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
------What kind of house do you want to have? Something big ? ------Well, it _______ be big.—That’s not important.
#78187
A
mustn’t
B
needn’t
C
can’t
D
won’t
(2013·青岛二模)John ________ yet, or he would have telephoned me.
#62411
A
mustn't have arrived
B
shouldn't have arrived
C
needn't have arrived
D
can't have arrived
---Is the man over there Mr. Brown?----It ______ him. He has gone to Brazil to watch the 2014 FIFA World Cup.
#74397
A
may not
B
can’t be
C
shouldn’t
D
mustn’t