Упражнение 417 на Future Simple

Почему мы используем Future Simple в этих предложениях? Рассортируйте.

Will you wait for me, please? I'm coming. →
 
The car won't start because the battery is dead. →
 
I don't think I'll ever live in Spain. →
 
A: Can you sign here? B: Sure, I'll just take a pen. →
 
"Doesn't want to"
Offer/request
Prediction
Spontaneous action
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