I. 1. D 2. C 3. C 4. A 5. B
II. 1. What class are you in?
2. He's not a policeman.
3. They are in the same row.
4. I am in Class Five.
5. What a nice clean room!
III. 1. T 2. F 3. F 4. F 5. T
IV. 1. is walking,is reading, are running, is playing.
2. took, were
V. 52431
VI. 答案略