一.I haven't heard from him___he went to america. 二.He won't be here __he is invited. 三.He will not go to the cinema __he is very busy. 四.We found the key she had left it. 五.We found the books two days __he had gone away . 六.We had no sooner got to the station __the train left. 七.He is explaining clearly__they could understand. 八.Do not leave the room ___yor have finished the test. 九.shi sang__shi went along. We found the key_ she had left it.