四、选写正确的句子，补全对话。(有一句多余)
D:
M: Well, doctor. It's my eyes.
D: How long do you have this problem?
M: Several days.
D: Let me have a look. Oh, Mike, I guess you are working too hard these days and taking less care of your eyes.
M: That's true.
D: Well, when you feel tired, just stop working and come out to enjoy a short rest. A good habit is very important to your eyes.
M: Thank you very much.
D: You're welcome. Remember my words.

从第一空到第五空依次为：
1. What's the trouble, Mike?
2. I can't see clearly.
3. What should I do, then?
4. And you shouldn't read in bed or go to bed too late.
5. All right, doctor. I'll try it.

这是发生在医生和患者Mike之间的就诊对话，我们结合上下文逻辑逐一匹配句子：
1. 第一空是医生开场问诊，对应句子"What's the trouble, Mike?"，符合医生询问患者哪里不适的语境。
2. 第二空Mike提到自己的眼睛出问题，后续描述眼睛的具体症状，对应句子"I can't see clearly."。
3. 第三空医生指出Mike的问题后，Mike接下来询问解决方法，对应句子"What should I do, then?"，引出后文医生给出的建议。
4. 第四空医生先给出第一条休息的建议，接着补充护眼的其他注意事项，对应句子"And you shouldn't read in bed or go to bed too late."，和后文提到的好习惯相呼应。
5. 第五空Mike听完所有医生的建议后作出回应，对应句子"All right, doctor. I'll try it."。
多余的句子是"I have a cough."，和本次对话讨论眼睛不适的主题无关。