Chuyển câu

1. I don't have a lot of money, so I don't buy a lot of new books.
 - If I......
 2. She feels unhealthy because she doesn't sleep enough
- If....
3. I don't have any food left in the fridge, so I will go out for dinner
 - If....
4. I don' know his address, so I can't write to him
 - If I.....
5. Because Hoa's English isn't good, she can't participate in the English speaking contest
 - If ....