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
_______ you tell me how I_______ get to the No．168 Middle School?
#74566
A
Do；can
B
Can；could
C
Could；can
D
Could；could
--- Shall I take your iPad to the shop to be repaired?--- Thanks, you _________. There is nothing wrong now.]
#63553
A
mustn’t
B
oughtn’t to
C
can’t
D
needn’t
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
---__________ I have a ticket , please? ---Sorry,sir. All the tickets were sold out ten minutes ago.
#78254
A
May
B
Need
C
Must
D
Should