1. I couldn't remember the time **when** there was no internet.
2. Who is your daughter? - She is the child **whose** has long, straight hair.
3. The restaurant **where** we had our dinner was the most expensive in this city.
4. Mary, **who** has only been in Japan for 3 months, speaks Japanese perfectly.
5. August is the month **in which** I always give my birthday parties.
6. The watch she had lost last week was found yesterday. (No relative pronoun needed)
7. The old woman we were travelling with told us her life story. (No relative pronoun needed)
8. Justine, **whose** parents live in Christchurch, has gone to Southampton.
9. They didn't care about the reason **why** she left her company.
10. I don't think my girlfriend will remember the day **we** saw each other for the first time. (No relative pronoun needed)