One day my friend and I【B1】______a firehouse. The fighters were very nice to us. They showed us the fire engines and told us how

One day my friend and I(11)visited a 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)climb 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)rings 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)burning 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)get to the fire. It seems like a challenging way to earn a living.