求：非谓语的5道选择题，速度！！！！

1.the old man ____abroad for twenty years, is on the way back to his motherland. A.to work B.working C.to have work D.having worked

2.____with the size of the whole earth, the biggest ocean does not seem big at all. A.compare B.when comparing C.comparing D.when compared

3.The news reporters hurried to airport, only _____the film stars had left. A.to tell B.to be told C.relling D.told

4.The disc, digitally ______ in the studio, sounded fantastic at the party that night. A.recorded B.recording C.to be recorded D.having recorded
5.the manager, _____ his factory's products were poor in quality ,decided to give his workers further training. A.knowing B.known C.to know D.being know

答案1D having+done 表示已经...
2D when compared=when it(the biggest ocean) is compared
3B noly+to do 表示结果.这里用 to be told 表被告诉.
4A The disc与 recorded 之间表被动关系.
5A the manager 与 know 之间表被动关系.