This is a test of commonsense. Complete the next sentence:

How to do well in tests and exams
Revise properly.
This means setting up a revision timetable up to days, weeks or even months before the exam or test. The amount of revision time needed will depend on how big the exam or test is.
You should revise the main topics for at least 20 minutes a day the week before the exam. Listen to what the teacher is saying.