1. They're are my favourite toys. They're my favourite toys. Здесь лишнее слово are.
2. Who are they are? Who are they? Здесь лишнее слово are.
3. This is my the big sister. This is my big sister. Здесь лишнее слово the.
4. I am have got a happy family. I have got a happy family. Здесь лишнее слово have.
5. They're the green. They're green. Здесь лишнее слово the.
Ответ: Выше приведены ответы.