一、1.Please sit down.

2.The children are reading books.

3.I played computer games last night.

4.How to write a postcard?

5.The Palace Museum is about 600 years old.

二、1.Did you have a nice trip？

2.What are they doing now？

3.How old is the Great Wall？

4.What would you like to eat？

5.Here is a kite for you.It’s from China.

三、1.May I take your picture？

2.The baby is crying now.

3.The old man is doing Tai Chi.

4.I bought a cap for my father.

5.I am writing an email on a computer.

四、It was fine last Sunday.I had breakfast at 7 o’clock. Then I went to the bookshop with my mother. We bought some books. We went back home at 5 o’clock in the afternoon. We had a good time. We were very happy.