补全对话
A: Hello, Li Lei! What are you doing now?
B: Guess!
A: .
B: Yes, I am. .
A: I’m doing my homework. And I’m going to the school library soon.
B: .
A: Yes, I like the school library best.
B: Why?
A: .What do you like doing best?
B: .I think it’s good for health.