Сделай задание под номером 14

Краткий ответ:

Q: Hi, Lena!
L: Hello, Olya! Look! That is my family over there.
Q: Is that your mum?
L: No, it isn’t. It is my grandma, Mary.
Q: Is she a doctor?
L: No, she isn’t. She is a teacher.
Q: And who are the girls? Are they your sisters?
L: Yes, they are. The girl with long hair is Dasha. She is seven. The girl with short hair is my sister Liza. She is nine. We are friends.
Q: Is that your dog?
L: Yes, it is. It’s our dog, Pushok.
Q: It is so cute!

Как выбрать форму:

• is — с одним человеком или предметом: she, it, that;
• are — с несколькими людьми или предметами: they, we;
• после отрицательного ответа используется isn’t/aren’t:
  No, it isn’t. No, she isn’t.

Проверка: family, grandma, teacher, Dasha, dog — единственное число, поэтому is; girls, they, we — множественное число, поэтому are.