Ответ:
- It is nice to be back!
- What are their names?
- I am from Russia, not from Poland.
- They are not my friends, they’re my sisters.
- Are you a fairy?
- Who is the present from?
- Why are you sad?
- Mary and James are tall and slim.
Правило: am употребляется с I, is — с существительным или местоимением в единственном числе, are — с you и формами множественного числа.
