tolong jawabain iya plis

2. I thank the woman who/ that helped me yesterday.
3. the books which/ that are on the table are mine.
4. the building where he lives is very old.
5. I will never forget the day when I met my boyfriend for the first time.
6. My brother, who/that lives in New York, is a lawyer.
7. Mary Ann, whom I told you about, is an actress.
8. Cathy showed us the dress which/that she bought yesterday.
9. I don't know the reason why he left me alone.
10. The boy whose bicycle was stolen yesterday was crying.