where can you find?

1. The principal,the head-master,the teacher,the black-board,the class-room,the desks,the tables,the chairs,the play-ground,the balls,the assembly hall, the theater, the laboratory.
2. All these we can find in the school.
3. The door-bell,the stairs,the bed,the clothes,the dining-room,the dining table,the kitchen,bath-room,the pets.
4. All these we can find in the house.
5. The stamps,postal-orders,post-cards,money-orders,the courier-post,the head post-master,the air-letter.
6. All these we can find in the Post-office.