从下面方框中选择适当的选项补全对话。（其中有一项是多余的）
A: Excuse me, may I ask you some questions?
B: Certainly.
A: _______
B: I eat them every day.
A: Do you like them?
B: _______But the doctor says they are good for my health.
A: Do you like junk food?
B: ______ But I try to eat it only once a week.
A: Why?
B: ______
A: How many hours do you sleep every night?
B: ______
A: Oh, I think you must be in good health.