阅读短文，回答问题。(20分)
Dear Dongdong，
Please come to my birthday party at 7 p．m. this Sunday.Welcome to my home.How can you get to my home? Let me show you.
First, you can take the No.6 bus.Get off at the bank.Go straight for 3 minutes then turn right.There is a hospital on the left.Next to the hospital is a red building.I live on the second floor，Room 201.
Yours，
Sarah
（1）Which bus will Dongdong take?
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（2）What colour is the building?
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（3）What's next to the building?
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（4）Which floor does Sarah live on?
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