I will have to study very hard, . . . . . . . . I can pass the exam.

A. such

B. therefore

C. in order

D. so that

Answer: Option D

Solution(By Examveda Team)

We use 'so that' and 'in order that' to talk about purpose. We often use them with modal verbs (can, would, will, etc.). 'So that' is far more common than 'in order that', and 'in order that' is more formal.