— Peter was admitted to a second－class college.— He ________ a top university, but he was addicted to playing puter games.A.had enteredB.would enterC.must have enteredD.could have entered
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D解析考查情态动词。could have done本可以做某事.他本可以进入一所一流大学的，但是他对玩电脑游戏上瘾了。