5/ I don't have a typewriter. I can't type it myself.
—>
6.I don't live in a big city, so I can't go to the cinema very often.
—>If
7. Lan doesn't have a bike, she walk to school.
—>If
8. I'm not a doctor , so I can't help you
—>If
9 They do not understand you because you do not often talk to them.
—>If
10. I'm so busy , so I don't write to my friends regularly.
—>If
11. People don't trust him because he tells lies.
—> If he
12. She is so busy that she can't come to the party.
> If she
13. don't have the money , so I can't go on holiday.
> If I

14. He gets bad marks because he is lazy.
If

15. Do it now , or you will not finish it on time.
> If

16. Hurry up , or we will be late for the exam.
—>If
17. Be quiet , or you will not understand the lesson.
—>If

18. The office may be closed , so Mark won't be able to get in.
—> If the ofice
19. You can't look the word up because you haven't got a dictionary

—>If I

1. You got into so much trouble because you didn't listen to me.

—>If

2. There are so many bugs in the room because there isn't a screen on the
—>If
4. He is busy right now. So, he can'thelp them.
—>If
4. I can't make all of my own meals because I am not good at cooking
—>If
6. I'm not you, so I can't tell him the truth.
—>If I
6.She came, so he wasn't disappointed

—>If