Question

This is my brother-in-law. He works in a bank. (who)
This is my brother-in-law who works in a bank.

1.This is the dress. My step-sister wore it at my party. (that)
______________________________________________.
2.They are Mr and Mrs Drake. Their daughter married my brother. (whose)
______________________________________________.
3.Have you met my stepbrother? I'm going on holiday with him. (that)
______________________________________________.
4.Here's your phone. You left it at my house. (which)
______________________________________________.
5.This is my best friend. She introduced me to my fiance.
______________________________________________.

Answer 1

1. This is the dress, that my step-sister wore at my party.

2. They are Mr and Mrs Drake, whose daughter married my brother.

3. Have you met my stepbrother, that with. I'm going on holiday

4. Here's your phone, which you left at my house.

5. This is my best friend, who introduce me with my fiance.