Delta, the American airline, is sometimes jokingly explained “Don’t expect your luggage to arrive” because it ______ be very slow.
#63051
A
should
B
must
C
can
D
will
推荐题目
--- Mum, could I play with my classmates for a while after I finish my homework? --- _______. But you must come back before supper.
#77775
A
Yes, you can
B
Yes, you could
C
No, you can’t
D
No, you couldn’t
－What do you think we can do for our aged parents?－You_______ do anything except to be with them and be yourself.
#63541
A
don’t have to
B
oughtn’t to
C
mustn’t
D
can’t
—You praise your son. He works harder than before. —Thanks, I will.
#74700
A
should
B
can
C
may
D
must
He ______ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
#62659
A
wouldn’t
B
shouldn’t
C
couldn’t
D
mustn’t
— Can you play the guitar?— No. I _ ___ . I can play the violin.
#74834
A
needn't
B
may not
C
can't
D
mustn't