In China when the traffic light is red, you ________ cross the road.
#74880
A
need
B
should
C
mustn’t
D
must
推荐题目
Some of my classmates _________ after school every day.
#77681
A
walks home
B
walk home
C
walk to home
D
goes home
The light in his office is out. He_________ left for home.
#62358
A
must have
B
must have been
C
should have
D
should have been
Would you mind ____ here?  Sorry, I won’t. 
#76083
A
smoke
B
smoking
C
not smoking
D
smokes