短文填词。 阅读下面短文，根据以下提示：1）汉语提示，2）首字母提示，3

With the development of agriculture and industry, more and
more people are pouring into big cities, _____ causes so much
trouble. _____ the growth of the population, city problems
are g _____. To begin with, big cities are becoming so
_____(拥挤)that is makes finding a job difficult. People without
a job probably become a d _____to our society. In addition,
the environment is getting w _____, and there are traffic
problems and pollution problems as _____. We have to face
them. Big cities need to control the population to h _____develop
_____ (自己) for the future. As for protecting the environment,
I think every _____(市民)should contribute to protecting the environment.