WeChat(微信) is________________(wide) used by most young people in our country today.
The man has got used to ____________(take) shorter shower to save water recently.
It’s reported that the rivers in Jingjiang ________________ (pollute) two weeks ago.
Riding bicycles to school ___________(help) to reduce the air pollution.
The teacher often warns his students _______________ (not break) the traffic rules.