IV. Complete the sentences with the correct form of the verb "to be".

Решение:

1. It's boiling hot in here. I am going to open the window.
2. What is your sister going to do next weekend? She is going to do sightseeing.
3. My grandparents are going to visit the Bolshoi Theatre.
4. Our friends are going to travel abroad.
5. My dad is going to hire a car.

Ответ: am, is, is, are, are, is.