The doctors are doing all that they _____, but the old man is still not breathing properly.
#62988
A
shall
B
need
C
may
D
can
推荐题目
Susan’s parents have bought a large house with a swimming-pool. It ____ be very expensive.
#76802
A
must
B
can
C
mustn’t
D
can’t
----Is that Henry? ----No. He here. He has gone to Australia.
#76397
A
may be
B
mustn’t be
C
can’t be
D
might be
—To make our city more beautiful, rubbish into the river. —I agree.
#78182
A
needn’t be thrown
B
mustn’t be thrown
C
can’t throw
D
may not throw
Oh, I'm not feeling well in the stomach．I ____ so much fried chicken just now．
#63067
A
shouldn't eat
B
mustn't have eaten
C
mustn't eat
D
shouldn't have eaten