S1:Where is it, do you know?

S2: It's the zoo.

S1: Right! What can you see in the zoo?

S2: Oh, I can see some trees and grass, they are all green. I can see some children. And in the fence（栅栏）, I can see an elephant.

S1: What are the children doing?

S2: They are watching the elephant. And the elephant is playing with a football.

S1：Is the elephant big?

S2: Yes, it is. It has big ears and a long trunk(象鼻）.

S1: Are the children having a good time?

S2: Yes, they are.

S1: What about the elephant?

S2: Oh, it looks happy too.