I decided that I ___________ become a doctor when I grow up.
am going to [future intention or plan]
I promise I ________ do my homework by tomorrow.
will [making a promise]
Do you think she _________ graduate from high school?
will [making a prediction]
When I get to Europe, the first country I _________ visit is France.
am going to [discussing plans for the future]
They promise that they ________ deliver the package by next week.
will [making promise].
Who do you think __________ win the World Cup?
will [making a prediction about the future]
I don't think I __________ ever be rich.
will [making a prediction about the future]
What __________ write in your essay for school? Do you have an idea?
are you going to [because we are discussing plans]
I _________ fly to Europe next month. I already bought my ticket.
am going to [discussing future plans]
Mother: "The phone is ringing." Son: "I ___________ get it."
will (or "I'll get it") [reacting to a situation]