I.语法填空
One Sunday morning in August I went to local music festival. I left it early because I had an appointment I _______(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.