According to the traffic rules, you _________ wear the safe belt while you are driving.
#62676
A
can
B
need
C
may
D
shall
推荐题目
 You __________be tired—you’ve only been working for an hour.
#62234
A
must not
B
won’t
C
can’t    
D
may not
His failure suggested that he   the teacher’s suggestions.
#62975
A
can’t have followed
B
needn’t follow
C
mustn’t have followed
D
shouldn’t follow