There is - There are (3)

Mia : There ____________________ an unusual house near here . Look !
Ryan : Wow , there are ____________________ stairs up to the roof .
Mia : It's because there ____________________ a roof garden .
Ryan : And a swimming pool ?
Mia : No , there isn't ____________________ swimming pool , but there is ____________________ amazing jacuzzi .
Ryan : Really ? Where ?
Mia : It's there . There ____________________ two chairs next to it .
Ryan : Oh , yes , but there aren't ____________________ people in it .
Mia : No . They're downstairs in the kitchen . Look !