Choose the correct options

1. We use
   ["will"|"be going to"]
   when we offer to help someone.

   A:It is very hot here!

   B:Don't worry, Iwillopen the window.

2. We use
   ["will"|"be going to"]
   when we make predictions* about the future.

   I am sure youwillpass this difficult exam.

3. We use
   ["will"|"be going to"]
   when we decide what to do before we speak about it.

   A:Let's go to the cinema!

   B:Good idea. Iwillbook the tickets.

* Predictions about the future — прогнозы на будущее.