2. ед. ч. There is a bed in the bedroom.
мн. ч. There are two beds in the bedroom.
3. ед. ч. There is a bedroom in the house.
мн. ч. There are two bedrooms in the house.
4. ед. ч. There is a vase on the cupboard.
МН. Ч. There are two vases on the cupboard.
5. ед. ч. There is a cupboard in the kitchen.
мн. ч. There are two cupboards in the kitchen.
Ответ: смотри решение выше