阅读对话，回答问题 (每小题2分, 共8分）
A: It’s four o’clock; let’s go home, Su Hai.  
B: I’m not so good, Su Yang.
A: What’s the matter？                 
B: I’m ill, I think.
A: Let’s go to see the doctor.             
B: OK, but how do we go to the hospital?
A: Shall we go there by bus?            
B: Which bus is for the hospital?
A: I don’t know. Er, let’s go by taxi.       
B: All right.
（1）What’s the time?
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（2）How about Su Hai?
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（3）Do they go to the hospital?
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（4）How do they go to the hospital?
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