To be going to / will

I am going to run.
You are going to write.
She is going to study.
We are going to join a club.
They are going to swim.

I will bake a cake.
You will be there.
It will eat the food.
We will see.
They will meet you there.

Now do exercise 5, 6 and 7 on page 32 in the workbook.