________ to the top of the hill and you’ll find the city more beautiful．

Mr Philip has made ______ survey on students’ lunchtime, and ______ survey shows us a lot of problems.

It’s traditional in China to firecrackers on Spring Festival. —-But the serious smog（雾霾）nowadays needs us to stop it.

The light railways and subways make it ________ for people to travel around Chongqing.

“There is ______ in today’s newspaper, so you needn’t read it,” the father says to his son.