Réponse :
Bonjour,
2. King George III bought it in 1761 . ( correct )
3. The royal family has lived in the palace since 1837.
4. In 1995 Queen Elizabeth decided to open the palace to the public.
5. Since 1995 thousands of tourists have visited the place.
3. I started university two years ago. I’ve been at university for two years.
4. I’ve known my English girlfriend Gemma for a year. I met my girlfriend Gemma a year ago.
5. She came to live in Italy three years ago. She has lived in Italy for three years.
6. We’ve bought a car an old Fiat. We bought a car last week.