— Peter was admitted to a second－class college.— He a top university but he was addicted

问题补充：

— Peter was admitted to a second－class college.

— He a top university, but he was addicted to playing computer games.

A. had entered

B. would enter

C. must have entered

D. could have entered

答案：

A. had entered

B. would enter

C. must have entered

(答案→)D. could have entered

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。