Maria failed the exam. She ____ have studied harder. (Criticism) They ____have met the celebrity if they were more attentive. (Missed opportunity) The waiter didn't ask for the bill. Our friend ____have paid before leaving the restaurant. (Strong guess) She is an intelligent student, but she ____ have misunderstood the instructions. (Weak prediction) She ____ have checked the answers more carefully. (It was the correct action, but she didn't do it.) Someone ____ have entered the office earlier. (There is clear evidence.) He ____ have saved it on a different computer. (There are several other possibilities) She ____ have completed the project on time. (It was possible, but she missed the opportunity.)

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