What did the exam say about giving? Yours Your own? In fact, an opinion is not for you to write a paragraph of your own opinion alone. You can write a paragraph that you don't support first, and then write this point in the second paragraph. It has disadvantages. You support another point because ... it can be very structured.
If it is divided into three sections, you'd better provide a view different from the first two views. Don't repeat the last one, otherwise it will be regarded as structural confusion.