根据句意、首字母提示或汉语写出合适的单词。
1. —What’s your home a_____________?
— It’s No.8 Jiaotong Road, Jinsha Town.
2. It’s very important for us to be careful when we are walking a__________  the road.
3. Our government has done something to r       “white pollution”.
4. My brother often failed in Chinese exams in the            (过去).
5. Visiting Shanghai World Expo, we can learn a lot of ______________(知识) about other countries.
6. Today more and more people realize the ______________ (重要性) of health.
7. In the past few years, the city has developed at very high ___________(速度).