1、The students of Class Two are sweeping (sweep) their classroom now. 2、The Reads weren’t listening (not listen) to the radio at that time. 3、How long have you lived (live) in this town? 4、You came (come) here last year, didn’t you? 5、She said that the car would be used (use) the next week. 6、I didn’t know what happened (happen) to China in a century. 7、When I got to the station, the train had left already (leave). 8、The stone bridge has been built (build) in our hometown for ten years.