teacher's desk,picture,wall,floor,yes,it的音标是什么?

teacher's desk还是teachers' desk 讲台的英语是teachers' desk还是 teacher's desk simon walked ( ) his desk( ) the teacher's desk 填介词 this a teacher,s deacher desk? The teacher's desk is y_____, Jim is ( ) the teacher's desk? This is s（） a.teachers'desk b.teacher desk c.tThis is s（） a.teachers'desk b.teacher desk c.teacher's desk teacher's desk or teachers' desk?teacher's office or teachers' office? 是where is teacher 'desk 还是where is the s teacher 's desk 为什么? on teacher's desk和on the teacher's desk有什么不同 怎样回答What's on the teacher's desk? there's a video t_____on the teacher's desk. teacher's desk和teachers' desk我们教材说的是teacher's desk,但有些练习册是teachers' desk,究竟是哪个呢?两个都可以? the book on theteacher's desk is mine=( ) ( ) the book on the teacher's desk What's on （ ）desk?A.teachers B.teacher's C.the teacher's is this a teacher,s desk?怎么作否定回答? IS this teacher`s desk?怎么改为肯定回答 Is this a teacher's desk?是神马意思?