阅读短文，回答问题: My name is Tom. I'm an American boy. There a

阅读短文，回答问题:
My name is Tom. I'm an American boy. There are four people in my family ,my parents ,my sister and me. My hobby is playing football.
We live near our school ,But it is very far from their hospital .We usually go to school on foot , but my parents have to take a bus.
Questions:
1.How many people are there in Tom's family?
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2.What do Tom's parents do?
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3.What's Tom's sister's hobby?
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4.Why do Tom's parents have to take a bus to work?
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