But I need to study harder because I want to pass the exam , and it 's very dificult .
But I need to study harder because I want to pass the exam , and it 's very difficult .
But I need to study harder because I want to pass the exam , and it 's very difficult .
Fix errors in this text: But I need to study harder because I want to pass the exam , and it 's very dificult . Output: