Решение:
Нужно вставить подходящее местоимение в предложения:
- I am a student.
- This is my book.
- He is my brother. He is 10.
- She is my friend. Her name is Polly.
- We love our school.
- They are my friends. They are nice.
- They have a new house. Their house is big.
- The cat eats its food.
- I like my family.
- Look at the boys! They are playing.
Ответ: my; my; Her; our; Their; its; my; They.