听短文,选择。
(1)_________________ at a red light.
A. Let’s go B. Stop and wait C. Slow down and stop
(2)How does John come to school?
A. By bus. B. By bike. C. On foot.
(3)We _________ pay attention to the traffic lights.
A. shouldn’t B. must C. must not
(4)---Does Amy often come to school by bike?
---_______
A. Yes, she does. B. No, she doesn’t. C. Yes, she is.