Réponse:
1. If you buy an Acrobat reader, you will be able to download and read hundreds of books.
2. Will your teacher get annoyed if you don't your homework today?
3. If you keep the lights on, your electricity bill will be high.
4. If you use your mobile to surf the Net, quite quickly the battery will run out.
5. I will get very tired at school if I go to bed late.
6. I feel better if I do some exercise.
