问题补充：
I often played truant then. How I wish I the time on my study!
A. spent
B. were spending
C. had spent
D. could spend
答案：
A. spent
B. were spending
(答案→)C. had spent
D. could spend
解析：考查虚拟语气。本题考查wish引导的与过去事实相反的虚拟语气，故用过去完成时。句意：那时我经常旷课，我多么希望我时间花在学习上啊！
