Rewrite the following sentences using TO INFINITIVE.
1. He opened the window because he wanted to let fresh air in.
2. I took my camera because I wanted to take some photos.
3. We filled the car up because we didn’t want to run out of petrol.
4. I didn’t want to see them, so I didn’t open the door.
5. He did not want to worry her, so he did not tell her what happened.
6. Tom was playing very softly so that he wouldn’t disturb anyone.
7. The boy tiptoed into the room so that he wouldn’t wake every body up
