Future Simple - to be going to

Choose the correct form of will or going to :

It is hot in here. I _ _ _ the window.

I think "Dinamo" _ _ _ the match .

Let`s have a picnic at the weekend.

Great idea! I _ _ _ buy the drinks.

We _ _ _ have a picnic at the weekend. We decided last week.

Look at the black clouds .It _ _ _ rain.

The sun is shining. It _ _ _ a nice day.

The phone is ringing.

Robots _ _ _ do everything in the future .

I think he _ _ _be a doctor.

In 2050 the people _ _ _ go to the Moon.