1. 这个问题被视为严重的.
2. 作为一个年轻人,艾略特学习了艺术.
3. 他们就像我们一样希望和平.
4. 大卫,你也知道,最近一直生病.
5. 我下公交车的时候看到了皮特.
6. Unless Jenny works really hard, otherwise she won't pass her exams.
7. I missed the last bus, so I had to walk home.
8. You do not need to return the book yet. You can keep the book until next week if you want.