In various exams, you are asked to make a choice and give reasons for it. In conversation or in a meeting, you need to explain and justify your decisions.在各种考试中需要作出选择并给出理由，在谈话或会议上需要对决定加以解释，可用以下表达方式：
◆There are two main reasons why I think it's the best option: first, there's the cost and second, the quality.我认为这是最好的选择，主要原因有两个：第一是成本，第二是质量。
◆I think/believe it's the right thing to do because it gives everyone a fair chance.我认为这么做是正确的，因为这给予每个人公平的机会。
◆I would choose the newer one on the grounds that it will last longer.我会选择较新的那个，因为它更加耐用。
◆Of the three houses, the largest one seems to me to be the best, because they need the room.这三栋房子中，最大的那栋在我看来是最好的，因为他们需要这么大的空间。
◆My choice would be number 3, simply because it's the clearest design.我的选择是 3 号，原因就在于它的设计最清晰。
