用方框中所给单词的适当形式填空，使短文恢复完整。

I had a dream last night. In my dream, I ran on the at first. My friends and I had a race. I ran than them. After the race, I was thirsty. So I came to a river and some water. But suddenly a big tiger found me and it wanted to eat me. Ivery afraid. "Help! Help! "I shouted. Then I woke up. a dream!