新概念英语（英语初阶）第1册139页 When were they there?他们是什么时候在那里的?4组分别前面1个一问你答
问题描述：
新概念英语（英语初阶）第1册139页 When were they there?他们是什么时候在那里的?4组分别前面1个一问你答
ON,ON,IN,IN 共4组一问一答
答
第一行：---When were Sam and Penny at the stationer's?---They were at the stioner's on Monday.第二行：---When were you and Susan at the office?---We were at the office on March 23rd.第三行：---When we...