在下列各句的空白处填入一个最恰当的单词。

1.  Don't make _____. The baby is sleeping.

2.  She is married, because she wears a ring on her ring _____. 

3.  In China, an old saying goes like this, "Kill two birds with one _____. 

4.  We have _____ up all the papers.  Can you give me some more?

5.  These bags are too heavy, so I can't _____  them on to the bus.

6.  There are four _____  in the world.  The Pacific is the biggest.

7.  The boy is a _____  boy.  Nobody believes him.

8.  —I don't know _____ volleyball it is.

     —I think it might be Grace's.

9.  John is very nervous now because he has a job i _____ this afternoon.

气体火灾，如煤气、天然气、甲烷等引起的火灾属于（）。

A、A类火灾

B、B类火灾

C、C类火灾

D、D类火灾