Be careful . You _______ cross the road when the traffic light is red . The traffic is heavy at this time of day .
#54286
A
must
B
mustn’t
C
can
D
needn’t
推荐题目
They have ________for about ten years.
#60168
A
bought the house
B
left here
C
lived there
D
gone there
We have never visited the museum, but we have ______ it.
#60470
A
stood for
B
belonged to
C
heard about
D
kept to
