---who______it be that is knocking at the door? ---It_______be Father, but I’m not sure.
#62245
A
can, must
B
can, may
C
must, can
D
may, must
推荐题目
---Why not wear your miniskirt, Rose? --- Well, my legs are too thick, if you ______ know.
#62222
A
should
B
must
C
may
D
need
I ________worry about my weekend—I always have my plans ready before it comes.
#63400
A
can’t
B
mustn’t
C
daren’t
D
needn’t
(2012·四川)—Goodbye，John.Come back again sometime.—Sure，________.
#62443
A
I did
B
I do
C
I shall
D
I will
-May we leave the classroom now? -No, you ______. You ______ to leave until the bell rings.
#78353
A
mustn’t, are allowed
B
don’t have to, are supposed
C
needn’t, aren’t allowed
D
can’t, aren’t supposed