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).