Ann was out so she ________ drunk the milk., couldn't have, must have, shouldn't have, I ________ watched that movie before; I can't recall it right now., may have, couldn't have, should have, I tried to call her many times but she didn't pick up the phone, so she ________ gone out this morning., couldn't have, must have, should have, He ________ seen a doctor before. If he had done that, he wouldn't be feeling so under the weather., must have, should have, could have, Sharon: "have you seen my keys?"; Mike: "I'm not quite sure, but I ________ seen them on the table earlier", may have, couldn't have, must have, I can't remember much from last night... I was so wasted I ________ even ________ hit on your sister..., couldn't have, must have, may have, You seem worried about your parents. You ________ called them before they travelled., should have, must have, could have, John is a terrific student, but last semester his grades were terrible. He ________ had some kind of family problem., couldn't have, should have, must have, Linda: "have you met Ann recently?"; Susan: "I ________ met her even if I wanted to, I've been so busy...", must have, might have, couldn't have, You ________ left your cell phone on the table this morning, I believe I've seen it on the table., might have, couldn't have, must have.

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