结合上下文及所给首字母填空 This i 1 a classroom. It is nice a 2 bright, but it is s 3 . The doors and w 4 are clean. The desks and chairs are clean, t 5 . The walls are white. O 6 the front wall there is a b 7 . The teacher's desk is near it. On the desk there are s 8 flowers and pencils. There is a clock on the wall. It's not old. It is n 9 .Now there are o 10 eight students in the room. They are cleaning the classroom.