One day my friend and I 11a firehouse. The fighters were very nice to us. They showed us the fire engines and told us how the equipment worked. I wanted to 12 the big ladder. They explained the bell system to us and told us how the fire-alarm box worked. Now we understand how dangerous it is when somebody 13 a false alarm. We also understand how dangerous it is to play with matches. I think fire fighters are very brave. They rush into 14 building and rescue people who are trapped. They wear heavy raincoats, thick rubber boots and helmets. They usually carry axes so that they can break windows and doors to 15 the fire. It seems like a challenging way to earn a living. 请在___11______处填上答案。