Решение:
Используем 'there is' для единственного числа и 'there are' для множественного числа.
- There is a fridge in the kitchen. (a fridge - единственное число)
- There are three toy-soldiers in the toy box. (three toy-soldiers - множественное число)
- There are a tea set and five dolls in the children's room. (a tea set and five dolls - множественное число)
- There is a sofa in the living-room. (a sofa - единственное число)
- There are two chairs in my bedroom. (two chairs - множественное число)
Ответ: is, are, are, is, are