exercise with affirmative and negative verb to be

COMPLETE THE FOLLOWING CONVERSATIONS.
1.A: _____ are those people?
B: ______ my teachers.
A: What _____ their names?
__________ and Anna.
2. A: ______ is Charlie.
B:_______________to meet you. My name is_____________
C: Where are _______from?
B:________ from Cananea. Just call me ________
3. A: How old ________ your brothers.
B: Juan _____ 15 and Carlos____13.