【单选题】One day ,I happened to(碰巧)talk to a stranger on the bus. When he found out that I was from Chicago, he told me that one of his good friends lived there and he wondered if I happened to know him. At fi...
【单选题】One day, I happened to(碰巧)talk to a stranger on the bus. When he found out that I was from Chicago., he told me that one of his good friends lived there and he wondered if I happened to know him. At f...