Add punctuation: Whenever you want to exchange the selected items with the next one in the inventory push T key P key is for pause the game
A: Whenever you want to exchange the selected items with the next one in the inventory, push T key. P key is for pause the game.

Add punctuation: July 20 1985 Opening meeting
A: July 20. 1985. Opening meeting.

Add punctuation: The haunted house deep in the woods invites you for a visit
A:
The haunted house deep in the woods invites you for a visit.