Вставить в предложения There's или There are ... two puppies in the bathroom ... five mice in the living-room ... a hamster in the hall ... six tortoises in the bedroom ... a budgie in the garden

There are используется со множественным числом (you, we, they) и исчисляемыми существительными. There is используется с единственным числом (he, she, it) и неисчисляемыми существительными.

There are two puppies in the bathroom. There are five mice in the living-room. There is a hamster in the hall. There are six tortoises in the bedroom. There is a budgie in the garden.