1. 我建议乘火车去北京。    
    I suggested                               Beijing by train.
2. 如果你不努力，你将会落到其他同学后面。   
    If you don't work hard, you will                               the other students.
3. 无论你说什么我们都不相信。    
    We don't believe ___    _ you__      __.
4. 近年来我们看到了很多歌手的兴衰。    
    We've ____     many singers                                                  these years.
5. 昨天晚上直到我母亲回来我才睡觉。  
    I ____         go to bed ___     _ my mother came. back last night.