Th problem which the air pollution in cities has become more
Th problem which the air pollution in cities has become more
Air pollution is___most serious problem in many major cities
the population problem has become more serious in developing
Air pollution has become the biggest (o ) inthe city now.
pollution is a serious problem in big cities throughout the
英语翻译1.As a result,air pollution has become a serious problem
英语翻译翻译:the population problem has become more serious in dev
Some of them which remain in the air _____ the air pollution
In fact, the environmental problem has already become the ma
It is urgent that the acute problem of air pollution in the
today pollution has become a seriously problem on earth.
The pollution problem in this area ___(become) worse and wor