书面表达。
请根据以下提示，用英语写一篇短文。
Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the present.
注意：
①无须写标题，不得照抄英语提示语；
②除诗歌外，文体不限；
③文中不得透露个人姓名和学校名称；
④词数为120左右。
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One Possible Version
All the past things become history, which cannot be changed. However, in daily life, people always
say that if they did this or that, they would be better off now. Does this make any sense? No. It’s widely
acknowledged that you cannot change the past whatever you do. Then why should we have regrets for
what happened in the past? Similarly, we should not attach too much importance to the future, for it is
really something uncertain unless you make it come true. Therefore, the present, which is what we are
sure about, is very important, because by making full use of it we can find a way to success. Please seize
the hour seize the day and treasure every moment that you have!