根据情景，在答题卡标有题号的横线上，写出一个英语单词的完整、正确形式，使对话通顺。
- You don't look well. What's the matter?
-I didn't sleep well. The noise upstairs kept me   all night.
- Do you know where John lives?
- Sorry, I just know he lives s   nearby.
- There's no student in the classroom. Where are they?
- They are doing   in the laboratory.
-I hear David is in hospital.
- Yes. He's   from serious mental disorder.
- Do you think you can finish the project in time?
- No, we need some  work at the weekend.