Don't use water to put out the fire if oil catches fire. As is known, oil ________ float on water.
#62205
A
shall
B
must
C
may
D
will
推荐题目
It’s said that there’re plenty of hotels in that town. There ______ be any difficulty for you to find somewhere to stay today.
#62543
A
wouldn’t
B
mustn’t
C
shouldn’t
D
needn’t
—I’ll call Bob and tell him the good news.—You __________ do that. He was here just now and heard it.
#62554
A
couldn’t
B
mustn’t
C
shouldn’t
D
needn’t
