阅读理解，根据短文内容回答下列问题。

Sam: What do you usually do on the weekend, Mike?

Mike: I usually go to the natureto park to watch insects (昆虫) and collect leaves. Sometimes I take a trip.

Sam: What are you going to do this weekend?

Mike: I am going to read books in the library.

Sam: I like reading very much. Let's go together, OK?

Mike: Great! But the library is far from here.

Sam: Really? How can we get there?

Mike: We can go there by the No.15 bus.

1. What does Mike usually do on the weekend?

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2. What is Mike going to do this weekend?

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3. How will they go to the library?

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