eaten
                    - “I’ve never eaten a hamburger.”— “_________ have I.”
 - Have you eaten your hamburger, Sue ? —Yes. But I’m still hungry. Could I have a ________ one please ?
 - Have you eaten your hamburger, Sue ? —Yes. But I’m still hungry. Could I have a ________ one please ?
 - What did Jack eat?—- He ________ an apple before he ________!