b) Who says each sentence?

Based on the dialogue: 1. Ryan: 'Which house is it, Dad?' 2. Dad: 'This one. Here we are.' 3. Ryan: 'Wow! It’s great and the garden is quite nice.' 4. Dad: 'I’ve got the key. Let’s go in.' 5. Ryan: 'This is nice. The living room is very big.' 6. Dad: 'Yes, but the kitchen is quite small. Let’s go upstairs.' 7. Ryan: 'Which is my bedroom?' 8. Dad: 'This one here. It’s your favourite colour – blue.' 9. Ryan: 'It’s great, Dad!'