I’m sure you will do better in the test because you so hard this year.A. studiedB. had st

问题补充：

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

答案：

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。