pollution has become a worldwide problem,it may be many year
pollution has become a worldwide problem,it may be many year
today pollution has become a seriously problem on earth.
英语翻译1.As a result,air pollution has become a serious problem
It has become a serious problem百度翻译中文
he pollution problem may be __one of the world today.A.the m
Th problem which the air pollution in cities has become more
The (a ) where they live have many problem with pollution.
英语翻译climate change may be a big problem, but there are many
Having suffered sruch heavy pollution already it may now be
A generation gap has become a serious problem
has become a problem 与 has became a problem 的区别~
Exercise: wasting has become a serious problem in the presen