WILL vs be GOING TO

-There's no water.

- John: Really? In that case, I ....... and get some.

Bob and Cathy ________________ see a movie tonight. It starts at seven o’clock. 

I promise I ..... do homework

In the future, I think humans ......live longer

Next summer we........ London for our holiday. W e’ve booked the flight.

I believe I .... be rich one day 

He is buying some butter and eggs because he _________ (make) a cake later.

I expect he ...... help me

I ..... see the moon at night, not during the day

My brother thinks it ______________ (rain) tomorrow.

My classmates and I ________________ have a test next Monday. We have to study!