Think and choose.
A. They re running fast.
B. Let's walk up the hill, too.
C. Let's go to the hill in the park.
D. They’re walking down the hill.
A: It's sunny and warm today.
B: Yes. It's a nice day._____
A: Sure. Let's go.
B: Oh, the hill is not high.
A: Look! Some boys are running up the hill over there.
B: Yes.______
A: Look at the old men.________
B: Yes. They're not fast.
A:_________
B: OK.
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