there happened to have two barbershops close to each other on the main street 这句话怎么改错?只有一处错,求分析,我高一,别太深奥

There ( )nobody in the room.were just happened being were happened happened to be. It happened to be 和There happened to be有什么区别? there happened to be 还是there happen to be把happen换成appear呢? Happened to /happened with 区别 There happened to be no one in your office when I phoneThere happened to be怎么回事啊` 去掉怎么样 happened on、happened with、happened to、happened for 区别 there are sth happened 还是there are sth happened The man hurried there to see what was happening还是what has happened There happened to be nobody in the room 句中的主语是:nobody吗? 英语翻译我的翻译~However,there was one comforting thing happened to me He happened to pass by there when the fire broke out.翻译 There happened to be nobody in the hall 属于哪种基本句式 one day,there happened to be an a___on the main street what happened to 和what happened What Happened to Us something happened to something happened to something happened to