Вставьте вместо пропусков нужную форму глагола to be. 1. i a student. 2. my father a doktor. 3. tom and tim clowns. 4. my mother and i friends. 5. at home?

1. I am a student.
2. My father is a doctor.
3. Tom and Tim are clowns.
4. My mother and I are friends.
5. Are you at home?