Here are the sentences matched with their definitions of future actions:
We've run out of milk. I will go now.
d) сиюминутное решениеAt five tonight my family will be watching TV.
e) действие в процессе совершения в определенный моментHe will have finished the novel by the end of the week.
f) действие, которое совершится до определенного момента в будущемBy January we will have been living here for a year already.
g) действие, которое будет совершаться какое-то время до определенного момента в будущемI've invited Jim to the party. He is coming soon.
a) намерениеWe are going to spend our winter holidays in the Swiss Alps.
c) запланированное действие в ближайшем будущемTomorrow the first train for Brighton leaves at 6.15 am as usual.
b) расписание
I hope this helps! If you have any more questions, feel free to ask.