Whenever we take a test, we must always properly prepare by studying and reviewing the material that we have been taught. We should never think that we know everything; that we do not have to study, review, or go back and look over the material that we will be tested over. When a person does not properly prepare for a test, there is the possibility that the person will fail, and failure leads to repeats and take-overs; not left-overs. Whenever we have to repeat a lesson or take a test over, it is not always going to be the same as the original which was given. The key is to pass the first time by doing your best, and applying yourself.
Be blessed, be encouraged, and have a great day.