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Help the hungry office worker brainstorm what happened to their missing turkey sandwich. Select ALL the sentences that correctly express a possibility (but not a certainty) about the past.
The correct answers are The new guy might have eaten it, The new guy could have eaten it, and The new guy may have eaten it.
To express that something was possible in the past, we use might have, may have, or could have followed by a past participle.
"Must have eaten it" expresses a strong certainty, not just a possibility. "Should have eaten it" expresses a regret or a missed good idea, rather than a deduction!