Нужно вставить there is или there are 1. three chairs in the room. 2. a red carpet on the floor. 3. some armchairs next to the table. 4. a big tree in the yard. 5. some books in the bag. 6. two balls in the box. 7. a mirror in the bedroom. 8. some pens on the desk. 9. two pictures on the wall.