Где вставить who или which.?

1. You can’t sit on a chair ……. . is broken.

2. Give me a photo ……. . I bought yesterday.

3. This is a girl ……. I met in the cinema.

4. Don’t eat the berries ……… are toxic!

5. This is the photo camera ……. . I’d really like to buy.

6. The woman ……… I saw yesterday was very kind to me.

7. Can you give me the phone number ……. . I gave you recently?

8. These are the pupils ……… won the competition.