Bring, fetch, go and get, get

All of them are possible.

I would choose 1 - it is (my opinion) the most polite and formal; for more informality 4 would be ok as well. Least would be 2 - makes it sound like a dog. 3 - to me sounds a bit rude to - I think the "go" just comes across that way and it isn't necessary.

From a grammar point of view, all four are fine.

True Cen but doncha think Link's most excellent

I'm impressed by our experts of various sorts, one of the reasons I hadn't quit after all 'em deletions

Dunno why I even read these grammar q's; after a lifetime in Journ you guys are still smarter'n' me