Look! This is umbrella .that is hat.
| A．a.an | B．an .a | C．an .the | D．a .the |
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!
—Excuse me. Can you help me?
—_______________________
A.By bus.B.Good. C.Yes.