A is a calf’s mother .
A. horse B. cow C. cat
Don’t ________on the road.
A.runB.to run C.running
I can go at a________light.
A. redB. yellowC.green
If you go on the road,you must know the________.
A.traffic rulesB. traffic C.lights
In U.S. you must wear a________when you ride a bike.
A.helmetB.hatC.scarf
—Let’s go to Children’s Center!
—______________________
A.That’s all right. B.Thank you. C.Hooray!