Ребяят , помогите с английским выберу ответ наилучшим.

Choose who, whose or which.

1. We are talking about the book which we bought a week ago.

2. I didn't know the woman whowas looking at me yesterday in the shop.

3. Where is the cake which he cooked yesterday?

4. Do you know whose dog it is?

5. They are discussing the girl who won the competition.

6. Do you see the cat which has a bh! violet bow:

7. The chocolate which I bought is in the fridge.