Read the passage and choose the correct answer.Hi, my name is Anna. This is the photo of my family. There are six people in my family: my grandmother, my grandfather, my mother, my father, my elder brother and me. These are my grandparents. They are old and retired. They love gardening and doing morning exercise. This is my father. He is forty-one and he is a doctor. He works in a big hospital. This is my mother. She is thirty-eight. She is an Art teacher. She teaches in a secondary school. This ...

Read the passage and choose the correct answer.

Hi, my name is Anna. This is the photo of my family. There are six people in my family: my grandmother, my grandfather, my mother, my father, my elder brother and me. These are my grandparents. They are old and retired. They love gardening and doing morning exercise. This is my father. He is forty-one and he is a doctor. He works in a big hospital. This is my mother. She is thirty-eight. She is an Art teacher. She teaches in a secondary school. This is my elder brother. His name is Jack. He is sixteen and he is a high school student. I'm ten and I'm the youngest in my family. Our family lives in a house on Nguyen Hue Street. The house is a little small but it's lovely. There is a living room, two bedrooms, a bathroom and a kitchen. However, the thing I love most is that the house also has a big garden and a large pond behind it. These are the places where my family likes to relax or fish on weekends.

What does the word "They" in line 3 refer to?