填空题
根据中文提示，将对话中缺少的内容写在线上。这些句子必须符合英语表达习惯。打句号的地方，用陈述句；打问号的地方，用疑问句。
提示；David在上班时病了，他感冒了并且发烧，他向经理Wang
Ping请了一天病假。当经理了解到他要坐公共汽车回家时，就让他搭了顺便车。David很高兴，要求顺路在药店停一下车，他想去买点药。
Wang Ping: You are not looking well, David.{{U}} (56)
{{/U}}?
David: I'm afraid that{{U}} (57) {{/U}}
Wang Ping: You
ought to take some medicine and go back to bed, I think.
David: Thank you,
Mr. Wang. But{{U}} (58) {{/U}}?
Wang Ping: Of course. How are you
going back?
David: By bus.
Wang Ping:{{U}} (59) {{/U}}
David:
It's very kind of you.{{U}} (60) {{/U}}? I want to buy some
medicine.
Wang Ping: No problem.