Ms. Calder was a substitute teacher for the day. She looked at her room list quickly. It said Room 12, English class.
考尔德女士今天是一名代课老师。她快速看了一眼自己的教室名单。上面写着12号教室，英语课。
She walked down the hall and found a door. The number above it read "21," not "12." She walked inside anyway.
她沿着走廊走去，找到了一扇门。门上方的号码是“21”，不是“12”。她还是走了进去。
Twenty history students looked up from their desks. Ms. Calder looked at her papers again. Something was clearly wrong.
二十名历史课的学生从课桌后抬起头来。考尔德女士又看了看手里的纸。显然哪里出了错。
"Is this English class?" she asked the room. A few students shook their heads slowly. "This is history," one boy said.
“这是英语课吗？”她问全班。几个学生慢慢地摇了摇头。“这是历史课。”一个男孩说。
Baxter sat near the door and raised his hand. "Room 12 is downstairs," he said. "I can show you the way."
巴克斯特坐在门边，举起了手。“12号教室在楼下，”他说，“我可以带您去。”
Ms. Calder thanked him and grabbed her bag. Baxter led her down two flights of stairs. They passed the library and the office.
考尔德女士向他道了谢，拿起包。巴克斯特领着她下了两层楼梯。他们经过了图书馆和办公室。
"Here it is," Baxter said. He pointed at a door marked 12. Ms. Calder thanked him again.
“到了。”巴克斯特说。他指着一扇标着12的门。考尔德女士又谢了他一次。
"You saved me a lot of time," she said. Baxter smiled and hurried back to his own class.
“你帮我省了好多时间。”她说。巴克斯特笑了笑，匆匆赶回自己的班级。
He arrived at history class a few minutes late. His teacher just smiled and waved him in.
他迟到了几分钟才到历史课。他的老师只是笑了笑，招手让他进来。
