14. They once started these machines by hand. They used to _________________________________ 15. He doesn’t get up late anymore. He _________________________________________ 16. David had gone home before we arrived. After ______________________________________ 17. We had lunch then we took a look around the shops. Before _____________________________________ 18. The light had gone out before we got out of the office. When ______________________________________ 19. After she had explained everything dearly, we started our work. By the time _________________________________ 20. The building is very old. He lives there. (where) __________________________________________ 21. I will tell you something. You didn‟t know it before. (which) __________________________________________ 22. I’ll never forget the day. I met you then. (when) __________________________________________ 23. t was cold. However, Tom still went swimming. (although) __________________________________________ 24. John is very sad. He fails the final exam. (because) __________________________________________ 25. He never left the house. He had been born there. (where) __________________________________________