1) He'll LIKELY/
PROBABLY have already gone by the time you get here
2) They'LL HAVE BUILT/
'LL BE BUILDING the arena by the end of the year
3) It`s very late - they aren`t
LIKELY/PROBABLY to come now
4) I'LL HAVE GONE/
I'LL BE GOING out this evening - I have tickets for the cinema
5) We normally have lunch at 1.30, so I`m sure
we’ll have finished/we finish by 2.30 at the latest
6) This time tomorrow, I`m sitting/
I`ll be sitting on the beach in Acapulco!