I will have to study very hard, . . . . . . . . I can pass the exam. A. such B. therefore C. in order D. so that

The correct answer is: C. in order

The word “in order” is used to introduce a purpose or goal. In this sentence, the speaker is saying that they will have to study very hard in order to pass the exam.

The other options are not as appropriate in this context. The word “such” is used to introduce an example or illustration. The word “therefore” is used to introduce a conclusion or result. The word “so that” is used to introduce a purpose or goal, but it is more formal than “in order.”

Here are some examples of how the word “in order” can be used in other sentences:

• I will have to save money in order to buy a new car.
• I will have to study hard in order to get a good grade on the test.
• I will have to work hard in order to get a promotion.