Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
पुस्तकम् पठति सः
सः पठति पुस्तकम्
पठति पुस्तकम् सः
सः अपि पुस्तकम् पठति
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.