根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。

food       tell       trip      later      tired

Last August, our class did something very special on our school __. We went to Mount Tai. We started at 12:00 at night. Everyone in our class took a bag with some  __ and water. After three ours, my legs were so   ___ that I wanted to stop. My classmates   ___me to keep going, so I went on. At 5:00 a.m., we got to the mountain! Everyone jumped up and down. Twenty minutes _____, the sun started to come up. It was so beautiful that we forgot about the last five hours!