--I failed again. I wish I harder.----But you .A. had worked; hadn’tB. worked; don’tC. had

--I failed again. I wish I harder.
----But you .
A. had worked; hadn’t
B. worked; don’t
C. had worked; didn’t
D. worked; didn’t

A. had worked; hadn’tB. worked; don’t(答案→)C. had worked; didn’tD. worked; didn’t解析：wish后宾语从句的虚拟语气只有两种时态，一是一般过去时，一是过去完成时。即若表示对现在或将来的虚拟就用一般过去时；若表示对过去的虚拟就用过去完成时。从句的时态完全不以wish 的形式而变化。这里是表示对过去的虚拟，答语叙述的是过去发生的事情，用过去时态。故选C。

这下我知道了