Listen and tick

Listen and tick the correct sentences.

A: What a fine day!

B: Yes. The park is nice, too. There are so many people in the park.

A: Look, there are some fish in the river.

B: Look here: NO FISHING. NO SWIMMING.

A: Yes. We mustn’t fish here. We mustn’t swim here.

B: Look at those people. They shouldn’t sit on the grass. 

A: They shouldn’t litter in the park. They shouldn’t pick the flowers.

B: We must protect the Earth.

A: You’re right. Let’s go and tell them.