Problem: A man and a dog tug of war over a frisbee. the man

Answer: throws the frisbee, the dog catches it and brings it back.

Problem: A woman stares blankly at the camera. she

Answer: takes a drink of tea.

Problem: How to get good grades at university
Place your focus where you need to improve.
Learning how to best direct your studies can help you improve your understanding of course material. If there's something you do not understand, focus on improving in that area.
Answer: Identify where you need to improve in each class and direct your focus accordingly. It may be one particular subject that's giving you trouble.