Maybe if I literature, but not science then, I would be able to give you more advice now.
A. studied
B. would study
C. had studied
D. was studying
网友回答
A. studied
B. would study
(答案→)C. had studied
D. was studying
解析：本题考查虚拟语气。句意为“或许当初我要是学了理科而不是文科，现在就能给你更多的帮助。”then表示过去的时间，if引导的从句是对过去的虚拟，因此使用过去完成时。选C。