1. A: Is you / your mobile phone new? B: This isn't my / I mobile phone. It's Tom / Tom's.

2. A: Those woman / women are Gina's sisters
we

B: Really? What about that man over there?

A: That's their / they're brother.

3. A: Are these your keys?

B: No. They're the children's / childrens',

4. A: These are my sister / sister's jeans.

B: They're / Their very nice jeans,

A: Yes, I know. She / Her clothes are nice.
.
5. A: Are those your sunglasses over there?

B: No. I think they're Brian / Brian's.

A: No, they're not. He / His sunglasses are black.