New York is one of the (11) large American cities to have. some of its policemen

New York is one of the (11 ) last large American cities to have some of its policemen on horseback. The New York Police have 170 horses that they use in certain parts of the city. The horses are expensive to (12) feed, but it needs even more special horseshoes. In fact, they need more than (13) 8,000 of them each year. Every police horse in New York gets new shoes every month. (14) Keeping these shoes in good repair is the job of six blacksmiths.  There are only about thirty-five of these blacksmiths  in the (15) whole United States.