Решение:
Заполняем диалог правильными формами глагола 'to be' (am, is, are).
- Jane: (a) Are you from Argentina?
- Gabriel: No, I am not.
- Jane: Oh! (c) Are you and your sister from Brazil?
- Gabriel: Yes, we are from Rio de Janeiro.
- Jane: (e) Is Rio de Janeiro the capital city?
- Gabriel: No, it is not.
- The capital (g) is Brasilia.
Ответ: a) Are; b) am not; c) Are; d) are; e) Is; f) is not; g) is.