题目内容：

阅读下面短文，根据短文内容完成句子。

People know the dangers of fires. It’s good for a family to learn how to prepare for a fire. Here are some suggestions:

Put a smoke alarm in the house. Smoke from a fire causes the alarm to go off. The alarm makes a loud sound. The sound tells everyone to leave the house at once.

Make escape plans. They should know all the ways out of the house. If there is a fire, everyone follows the plan to get out. Part of the plan is to check all the windows to make sure they can be opened easily.

Buy fire extinguishers (灭火器) in the house. Everyone in the family should know how to use them.

Practice for a fire. They do fire practice because they teach children about fire safety. Everyone in the family should know the following fire rules:

① Don’t open a hot door! The fire can grow more quickly if you open the door. ② Stay close to the floor! Smoke can be more dangerous than fire. The best air is near the floor because smoke rises. ③ What will you do if your hair or clothes start to burn? First, stop! Don’t run! The fire burns faster because of more air. Drop! Fall to the floor. Then roll (打滚)! Turning over and over will make the fire go out. Put a blanket around you to keep air away from the fire that still be on you.

There are many possible causes for fires. A wise family is ready all the time. If there is a fire, don’t forget to call 119 for help.

1.The fire alarm makes loud sound to tell everyone to ________ at once.

2.Everyone should make sure that ________ can be opened easily as part of the plans.

3.________ can be more dangerous than fire, so stay close to the floor.

4.When your clothes start to burn, more air will make the fire ________ if you run.

5.The passage is mainly about ________.