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。