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
----- Must I park my car behind the building?------No, you ___________ . You ___________ park it here .
#76134
A
mustn’t ; may
B
may not ; must
C
don’t have to ; may
D
shouldn’t ; must
The room is in a terrible mess; it ________have been cleaned.
#63479
A
can’t
B
mustn’t
C
shouldn’t
D
wouldn’t
--- It’s so late. Our son______ be back!--- Don’t worry. I dare say he ______ have some extra work to do.
#62953
A
can; must
B
will; might
C
should; must
D
must; may
--Let’s go to the Tian’anmen Square by taxi. --Oh, it’s not far from here. We_______ take a taxi.
#78184
A
couldn’t
B
needn’t
C
mustn’t
D
can’t