1.The waiting crowd formed up in a long line. 等候的人群排成长长的一队2.I met him by chance yesterday.(by chance 偶然;意外地 )3.Yesterday I came across an old friend. (come across偶遇)
crowd in 是什么?是 crowd 吧?I met Tom by chance yesterdayShe came across to talk with me.He intends his son to manage the company. They managed to carry on their experiments in spite of the difficultiesThe mailman delivered the letters promptly