阅读理解。 D Look, this is my classroom. It's big and bright (明亮的). In the front, there is a big teacher's desk. On the teacher's desk, there is a box of chalk. In the teacher's desk, there is a computer. There are thirty-one desks and thirty chairs in it. Behind each chair, there is a bag. There are four big and clean windows in the walls of our classroom. And on the front wall there is a red flag (旗帜). There is a big TV on the front wall, too. Our classroom is on the first floor in the teaching building. On this floor there are three classrooms and two teachers' offices. And on the second floor, there are three classrooms and two teachers' offices, too. On the ground floor, there is a reading room, a library and two classrooms. 1. There are _____ students in our class. A. thirty B. thirty-one C. sixty-one D. no 2. There are _____ classrooms in our school. A. three B. two C. eight D. four 3. There are _____ floors in the teaching building. A. three B. two C. eight D. four 4. There are _____ teachers' offices on the ground floor. A. one B. two C. three D. no 5. Where is the computer in our classroom? A. On the teacher's desk B. In the teacher's desk C. On the front wall D. In the front wall