----Walking is _____legs and hearts.
---Yes, we should often walk.
A.bad for B.good for C. good at
There is going to _a football game this afternoon.
A. have B. will have C. be
My friends and I often play basketball ___Saturday afternoon.
A.on B.in C. at
They spend much time _____TV last year.
A. to watch B.watched C. watching
---Would you mind ______the window for me? I feel a little cold.
---Not at all. I’ll do it right away.
A. open B.opening C. closing
人口过多带来许多社会问题，比如住房紧张、交通拥挤、资源短缺、就业难等问题，以及人口众多带来环境问题，比如生活垃圾污染，对人类健康带来很大的危害。请结合以上问题，谈谈我们应该采取的措施。
