умоляю помогите

II. Put in: who or which.

    1. She returned me the book … I gave her yesterday.

    2. Do you know the student … has won the first prize in the competition?

    3. The mother tongue is a language … a child learns naturally, in his/ her family.

    4. I knew a lady … played tennis every day.

    5. Kate found a bag … she liked.