PERFECT
Homer ............. (eat) a lot lately, i think he needs to start a diet urgently!
Homer has been eating a lot lately, i think he needs to start a diet urgently!
Tony ............. (try) to build the perfect armor for years now, but he ............. (not have) any success yet
Tony has been trying to build the perfect armor for years now, but he hasn't had any success yet
Steve ............. (never visit) the white house, which is ironic considering he's Captain America.
Steve has never visited the white house, which is ironic considering he's Captain America.