I hear our teacher will be back__three week's time为什么是at?

I hear our English teacher is_______（打分）the test papers in his office. I hear our teacher will be back__three week's time为什么是at? 选择：I hear our teacher will be back ---- three weeks' time. A.at B.in C.for D.after our new teacher speak english so quickly that i cannot （）what he says.a.listen b.hear c.catch our classroom is so ____(noise) that i can't hear the teacher clearly.为什么要填那个 I hear our teacher will be beck_______three weeks'time. A.at B.in C.for D.after可后面是一个时间段呀？还能用in吗？ I hear our teacher will be back ____ three week's time.A.if.B.in.C.for.D.after 求讲解 That w（）is our Chinese teacher,Misszhang Our class teacher ( )very happy to hear the good news.(be）理由 16.Tan :“Father ,may I go out and play football ”Father:“ () you () (do ) your homework ”17.All the people in the town are glad () (hear) that a famous musician (音乐家) () give a concert (音乐会) this Saturday evening18..Our teacher to will be in 与will be for的区别I hear our teacher will be back()three week's time括号里应该填in还是for?为什么?有什么区别 i hear I like our art teacher.she t_____ us a lot . I () that man is our new teacher,Mr.Green. 67.I wondered _____ our teacher did that for.. Our teacher is a wise man.I will____his advice 英语试卷改错题I am very exciting to hear that you are coming to our school soon.Now let me to introduce our school to you.Our school is a famous school with long history.Wehave many experienced teacher and excellent equipment.There were two te I'd like to (i ) our English teacher to our party