某英文报纸正在举行“我难忘的一次经历”主题征文比赛。假设你曾参加过全校大合唱比赛。请你以“An unforgettable experience”为题，根据下表提示，用英语写一篇短文，准备投稿。

注意：（1）短文须包括上述要点，可适当增加细节，以使行文连贯；

（2）文中不得出现真实的人名、校名等个人信息；

（3）词数：100左右。开头部分已给出，不计入总词数。

An unforgettable experience

During the past year at high school, I have had many unforgettable experiences. One of them was______________________________________________________

Try to _____ the children down. They’re too excited.

—What’s the matter with you, Sandy?

—I’m _____ a bad cold. I think I am dying.

You’d better have a talk with your friend _____, and then the misunderstanding will disappear.

_____ your classmates and you will make more good friends.

—Have you finished your experiment report, Jane?

—Oh, my God. I’ve _____ forgotten all about that.

I don’t think it was an accident at all. Your brother did it _____.

—Who called just now, Sam?

—It’s Terry. She asked _____.

He said, “Don’t do that again.” He _____ me _______ that again.

_____ of the students who took part in the military training is 450.