学进去

补全对话。
A. Don't stay near the river.
B. It's a good place to have a picnic.
C. Don't ride a bike in the park.
D. Don't walk on the grass.
E. Let's ride our bikes.
Tina: The park is big. _________ 
Tony: No, Tina! Look at the sign! It says, “________ ”
Tina: Well! Let's go inside on foot.
Tony: The grass looks good. Let's have a picnic on the grass.
Tina: Er… Look at the sign. It says, “________ ”
Tony: Oh, sorry!
Tina: There's a river. Let's have a picnic there.
Tony: No, Tina! There is a sign, too. It says, “_________”
Tina: Where can we have a picnic?
Tony: Look! There is a table and some benches（长椅）.
_________
Tina: You're right. Let's go.