When the traffic lights are red, we _______ stop.
#77230
A
should
B
might
C
must
D
may
推荐题目
 ---_______I come back before five o’clock? ---No, you ________. But you________ be back later than seven o’clock
#74703
A
Need; must; mustn’t
B
May; mustn’t; can’t
C
Can; can’t; can’t
D
Must; needn’t; can’
Today is Wednesday. He _______ be at home. He _____ be at school.
#77250
A
can’t; can
B
can’t; must
C
mustn’t; must
D
mustn’t; can