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
Tom’s score on the test is the highest in the class. He _____.
#62444
A
should study last night
B
should have studied last night
C
must have studied last night
D
must study last night
—Whose purple coat is this?—It ____ be Lily’s. Hers is red. It _____ be Lucy’s. She likes purple.
#75643
A
must; may
B
may; must
C
can’t; may
D
mustn’t; must
---Why hasn’t Jane arrived yet? ---She ______ again in the morning.
#62660
A
shouldn’t have overslept
B
may have turned off the alarm clock
C
must have no one to call her
D
should have someone to wake her up
—Who’s that over there, Is it Jane?—No, It ________ be Jane. She is ill in hospital today.
#76202
A
won’t
B
mustn’t
C
can’t
D
needn’t
The manager commanded that the work ____ finished by the end of this month.
#62764
A
should be
B
will be
C
must be
D
ought to be