— __________ we leave the library before 5 o’clock?— No, you needn’t. You can stay here until 5:30.
#74504
A
Must
B
May
C
Can
D
Could
推荐题目
According to the traffic rules, you _________ wear the safe belt while you are driving.
#62676
A
can
B
need
C
may
D
shall
--- Shall I get one more cake fro you, David?--- Thanks, but you ______. I’ve had enough.
#63054
A
shouldn’t
B
mustn’t
C
can’t
D
needn’t
— I can’t get through to the general manager’s office.—The line is busy. Someone ________ the telephone.
#76155
A
must have used
B
could use
C
could have used
D
must be using
(2013·青岛二模)John ________ yet, or he would have telephoned me.
#62411
A
mustn't have arrived
B
shouldn't have arrived
C
needn't have arrived
D
can't have arrived