语法填空：阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当
的词或使用括号中词语的正确形式填空。
One Sunday morning in August I went to local music festival. I left it early because I had an appointment
1______ (late) that day. My friends walked me to the bus stop and waited with me 2______ the bus arrived.
I got on the bus and found a seat near the back, and then I noticed a man 3______ (sit) at the front. He
4______ (pretend) that a tiger toy was real and giving it a voice. He must be 5______ (mental) disabled.
Behind him were other people to 6______ he was trying to talk, but after some minutes 7______ walked
away and sat near me, looking annoyed.
I didn't want to be laughed at for talking to him but I didn't like leaving him 8______ his own either.
After a while I rose from my seat and walked to the front of the bus. I sat next to the man and introduced
myself. We had 9______ amazing conversation. He got off the bus before me and I felt very happy the rest
of the way home.
I'm glad I made a choice. It made 10______ of us feel good.