读一读，填上合适的单词完成句子
1.The people in the Stone Age eat ________ meat. It doesn't ________ good.
2.Firefighters can use the water to ________ ________ the fire.
3.People ________ smoke in the forest or on the mountain.
4.The teacher is talking about the fire ________ in the classroom.
5.Look at the ________. It means "No swimming in the river".
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