——What’s _____the tree? ——Oh, He’s my brother, Mike. A.at B.on C.in
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!