Hi, guys!
Present Simple or Future Continuous?
Look at those dark clouds. When class (be)______________________ over, it ___________(rain, probably).

Question

Hi, guys!
Present Simple or Future Continuous? 
Look at those dark clouds. When class (be)______________________ over, it ___________(rain, probably).

Answer

When class is over, it's probably going to rain .
OR
When class is over, it'll probably rain.

Answer

When class is over it will rain probably.