Unit 1 My School Lesson 1 teacher’s desk teachers’ office library first floor second floor It’s on the second floor. It’s on the first floor 一楼 一楼 二楼 Where’s the teacher’s office? It’s on the first floor. Teacher’s office 教师办公室在一楼。 Where’s the library? It’s on the second floor. 教师办公室在二楼。 Is this the teacher’s office? No, it isn’t. Teacher’s office The teacher’s office is next to the library. 紧邻 在……近旁 homework Here’s my homework.