关于fire safety的英语作文6到7句

When did people start to use fire?No one knows,but we know it was a long time ago.Some people say it was about 200,000 years ago.Other people say it was 1,000,000 years ago.Fire was useful then and fire is useful now.Fire was a great thing.It changed our future but fire can aslo be very dangerous.Don't play with fire and when you see a fire.You should be carful.