1. I don't really want to go to the museum.

-> I would rather not go to the museum.

2. The fire has destroyed many houses.

-> Many houses have been destroyed by the fire.

3. She didn't say a word as she left the room.

-> She left the room without saying a word.

4. My father started to give up smoking last year.

-> My father has given up smoking since last year.

5. How long have you bought this car?

-> When did you buy this car?