Which expressions would you use for each of these photographs?
1) Perfect!!! 2) What? This can't be! 3) Here are your keys, but be careful! ;)
2) This can't be! = This can't be true!
Very well done, but I'd rather write the latter form. ("the latter" means "the last thing mentioned" and not "the former", which means "the first thing mentioned".
You deserve my 5 "stars" indeed!