---I’m sorry to hear that the swimmer drove again after drinking and hurt seriously. --- It’s too dangerous. The traffic accident was a really _______to him.

He is an Australian boy. He is from _______.

The river near our village is about ____long.

_________pieces of bread _______in the box?

-You look so worried, what’s wrong?  -More and more people like me begin to worry about the ______ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.