题目

One morning，I was waiting at the bus stop，worried about__1__(be) late for school. There were many people waiting at the bus stop，__2__some of them looked very anxious and__3__(disappoint)．When the bus finally came，we all hurried on board. I got a place next__4__the window，so I had a good view of the sidewalk. A boy on a bike__5__(catch) my attention. He was riding beside the bus and waving his arms. I heard a passenger behind me shouting to the driver，but he refused__6__(stop) until we reached the next stop. Still，the boy kept__7__(ride)．He was carrying something over hi判断正误(对于真命题画“√”，对于假命题画“×”)：若a∥b，b∥c，则a∥c．( )