If you hard you a good grade in the exam.A. study haveB. will study will have C. will s

问题补充：

If you hard, you a good grade in the exam.

A. study, have

B. will study, will have,

C. will study, have

D. study, will have

答案：

A. study, have

B. will study, will have,

C. will study, have

(答案→)D. study, will have

解析：句意：如果你努力学习的话，考试中你将得到一个好成绩。这是一个真实条件下的虚拟语气，符合“主将从现”原则，即：如果主句用将来时，if引导的从句要用一般现在时，故选D。