问题补充：
----I failed again. I wish I harder.---But you .
A. had worked; hadn’t
B. had worked; didn’t
C. worked; don’t
D. worked; didn’t
答案：
A. had worked; hadn’t
(答案→)B. had worked; didn’t
C. worked; don’t
D. worked; didn’t
解析：考查虚拟语气。动词wish后面的宾语从句要使用虚拟语气。根据上文的failed说明是与过去事实相反的虚拟语气，故使用“过去完成时”；第二空的but后面使用陈述语气。句意：—我又没有及格，我多么希望我努力学习了啊!—但是你没有。故B正确。
