After a careful survey about the cause of the newly-built bridge, they finally came to a(n) _________ that it was due to the heavy rain.

There are   students in our schoo1.

 Reading the job ad, he wondered whether he was ________ to apply for it.

In order to reduce   air pollution, many people want  a total _____on the playing of firecrackers (鞭炮)in many cities during the Spring Festival.

Teenagers are often treated like _____bigger children, but they are old enough to beindependent.