I. 1. They go to school by bus.

2. This is a kite.

3. The baby is crying.

4. We ate in a restaurant yesterday.

5. I hurt my arm.

II.1. A: Where did you go yesterday?

B: I went to the park.

2. A: Don’t write on the Great Wall.

B: Sorry, I won’t.

3. A: How old is the Palace Museum?

B:It’s about six hundred years old.

4. A: Did you have a nice trip?

B: Yes. I had a great trip.

5. A: What is the girl doing?

B: She is planting trees.

III.1. Where did you go yesterday?

2. Here is a gift for you.

3. How did you go to the Great Wall?

4. What did you see at the zoo?

5. Will you visit Shanghai this summer?

IV. Dear Sarah,

I'm fine. How are you? I'm happy to write to you. Today I will show you my school. My school is big and clean. The teachers are kind to us. There are three computer rooms. We can learn how to use the computers. The computers are very useful. I love my school.

Your friend,

Li Lin