Вопрос по английскому языку:

Complete the sentences with relative pronouns who/that/which/where/whose if it is necessary.
I have a new skirt ______that/which/-________ I really like.
1 John, _______________ mother is a painter, is my best friend.
2 We went to Mechanicsburg, _______________ my grandparents live.
3 There are some boys in my class _______________ play basketball very well.
4 I loved the book _______________ you gave me for my birthday.
5 Frank has a small cottage _______________ is not very far from Warsaw.
6 I don’t watch films _______________ make me cry.
Помогите пожалуйста