Problem 15 - Entrance Test

Not having ________ the exam, I felt unprepared.

A. study forB. studied forC. to study forD. have studied for

Correct: B

The correct answer is 'studied for' because it is in the past participle form, which is used to describe an action that happened before the main action in the sentence. The sentence should read: 'Not having studied for the exam, I felt unprepared.'