I’m sure you will do better in the test because you so hard this year.
A. studied
B. had studied
C. will study
D. have been studying
网友回答
A. studied
(答案→)B. had studied
C. will study
D. have been studying
解析：考查时态。句意：—我确定在考试中你一定会表现的很好，因为你今年学校的非常认真。现在完成时可以表示过去发生的事情对现在的影响，也可以表示过去发生的事情持续到现在。本题体现出过去发生的事情对现在的影响。故B正确。