Đại từ quan hệ: 1. Do you know that girl? Her mother is in hospital now. 2. Can you see the girl? Her dress is red

Help me!! 
Đại từ quan hệ:
1.Do you know that girl?Her mother is in hospital now.
2.Can you see the girl?Her dress is red
3.This is the picture book.Its covers are missing
4.This is the car.It engine uses only 4 litters of pet
5.She is the best person.I have ever met her in my life.
6.mary wants to buy the land.Its owner is abroad non.
7.This is the women.Her son helped tou last week.
8.She came to class early.It supprised us.
9.He left without saying goodbye.It is rather impolite.