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Упражнение 2.1.
Необходимо вставить в пропуски глагол to be в Present Simple:

Are they your friends?
My dad is a teacher.
Your mum is at work.
Are you hungry?
My friends are happy.
This car is old.
My parents are not (aren’t) at home.
Is Billy a doctor?
Sue and Tom are good and healthy.
The children are at home.
Упражнение 2.2.
Перевести предложения на английский, вставив глагол to be в Present Simple:

Моя сестра дома. — My sister is at home.
Лена и Анна — студенты. — Lena and Anna are students.
Моя комната уютная. — My room is cozy.
Ваши родители в школе? — Are your parents at school?
Они сейчас в университете. — They are at the university now.
Это моя книга. — This is my book.
Его зовут Джон. — His name is John.
Где ваш друг? — Where is your friend?
Это мои ручки. — These are my pens.
Это их тетрадь. — This is their notebook.