Uncle ________ exercises.It's not good for his health.
Which one is not right? ________A.Drive fast by sled.B.Wear a life jacket on a ferry.C.Stop at a redlight.
Don’t ________on the road.A.run B.to run C.running
I can go at a________light.A. red B. yellow C.green
If you go on the road,you must know the________.A.traffic rules B. traffic C.lights
In U.S. you must wear a________when you ride a bike.A.helmet B.hat C.scarf