完形填空(本题共15小题, 每小题1分, 共15分)
On my first day of high school, I met David. It was cloudy. When I went home after school, I saw a boy also walking back home. He was my classmate, David. He was carrying his books. 21._______ he was walking, I saw a group of kids rushing to him. David 22._______ and his glasses went flying. All his 23._______ fell on the ground. Then the kids ran away. He looked up and I saw sadness in his eyes. I helped him stand up and 24._______ his glasses. Then I saw there 25._______ a big smile on his face.
From then on, we became 26._______. The more I got to know David, the more I liked him. During the four years, we always studied, played together and had a 27._______ time.
On the day when we finished high school, I could see that he was 28._______ about his speech. So I said, “Don’t be stressed out. Believe in 29._______ and you’ll be the best!” Then he began, “Today is a good time to say 30._______ to those people who helped you succeed through the difficult years. Our parents, our teachers, but mostly our 31._______. Being a friend to someone is the best gift you can give them. I’ll 32._______ you a story…” I just looked at the handsome popular boy amazingly when he told the story of the 33._______ day when we met each other.
All of us were 34._______. Everyone was listening to his story in silence. I saw his parents looking at me and smiling. I did not know the deep meaning 35._______ that moment. I know even a small action can change a person’s life. As you know, “Friends are angels to make us rise when our wings have problems flying.”

I got to the party late. By the time I arrived, some people ______ home already.

– Were you late for work yesterday morning?

– Yes. By the time I got to the bus stop, the early bus         .

A. has already left           B. is already left         C. had already left

根据句意，从方框中选择恰当的单词填空。部分单词在在填入时须进行词形转换，每个单词只能选用一次。每空只能填一词。