Ⅰ. 完成附加疑问句
1. There happened to be an accident on the road, ?
2. He is unfit for this job, ?
3. The old man lying on the ground is homeless, ?
4. These students never come late to school, ?
5. Let us go to the park, ?
6. Don’t tell anyone about it, ?
7. Open the door, ?
8. I don’t think that he can finish the work, ?