完成句子。

1. you should go out playing              (而不是) working all day.

2. My life              (改变) a lot in the last few years.

3. We shoule be allowed to choose              (我们自己的) clothes.

4. You would rather stay at home              (而不愿意参加) to a party.

5.             (当心) of the dog that does not bark.

升压时待锅炉冒出的完全是蒸汽时应关闭（）。

A.安全阀

B.蒸汽阀

C.空气阀

D.给水阀