Never.
No Ash is not going to battle the Sinnoh Elite 4.
Yes!
No...
Going around the world making air pollutions.
Probably.
No
If i was Ash i would pick Misty XD
Example sentence: I will clean the house."Will" replaced with "About to": I am about to clean the house."Will" replaced with "going to": I am going to clean the house.
yes, in dp118
As of now there have been no signs for any plans for Ash being in the Manga.
well there are many hints they property going to make another movie and if ash and kiss I'm going to faint.
Only in fanfiction.