There is more and more air __(污染)in the big cities .填什么形式
问题描述:
There is more and more air __(污染)in the big cities .填什么形式
答
填pollution,污染pollution是不可数名词,不能在其后面加“s”
译文:大城市的空气污染越来越严重。
答
名词,pollution
答
pulltion/being polltuted/polluted
答
pollution
答
pollution 不可数名词