1. There is a fridge in the kitchen. (фригидисчисляемое)
2. There are two boxes in the living room. (множественное число)
3. There is a mirror in the bathroom. (единичное число)
4. There are some lamps in the house. (множественное число)
5. There are three shelves in the bedroom. (множественное число)
6. There is a mouse in the box. (единичное число)
7. There are five rooms in the house. (множественное число)