Ethics is the least easy area to guess at possible questions. Most of the topics in it have already come up. However, situation ethics and utilitarianism are possibilities, as they have come up the least. I would guess perhaps something on the rejection of absolute moral rules by situation ethics, and maybe something on whether it is possible to measure good. In the year 2 Ethics topics, sexual ethics has not come up yet. Therefore a question on whether religious beliefs should have a bearing on sexual morality might come up. You might want to have a go at doing an essay on each of those topics to practise.