21. He doesn’t work hard, so he doesn’t get a better salary.  ................................................................................................................................................. 22. You don’t go to bed early, so you feel tired in the morning.  ................................................................................................................................................. 23. The weather is too bad, so we don’t go out.  ................................................................................................................................................. 24. Today is not a holiday, so we cannot go to the beach.  ................................................................................................................................................. 25. I don’t speak to her because I don’t know her.  ................................................................................................................................................