The Chinese government has done a lot to control plastic (污染) in big cities.
You'll find a nicer world if you 're k (友善的) and helpful to people around.
There will be a big p (聚合) for the school﹣leavers this evening.
We can not enjoy more on the journey if we go too f (快速地).
Never c (横穿) the street when the red light is on.
When the sun goes down, the s (星星) come out.