初中英语单项选择一题--Today is Monday .It's your____to clean the blackboard.--Yes.I'm on duty today.I'll do that at once.A.job B.appearance C.turn D.workbut,why?说明原因,不要长篇大论的COPY!既然答案都给出了,就表再给个

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初中英语单项选择一题--TodayisMonday.It''syour____tocleantheblackboard.--Yes.I''mondutytoday.I''lldothatatonce.A.j

初中英语单项选择一题--Today is Monday .It's your____to clean the blackboard.--Yes.I'm on duty today.I'll do that at once.A.job B.appearance C.turn D.workbut,why?说明原因,不要长篇大论的COPY!既然答案都给出了,就表再给个
初中英语单项选择一题
--Today is Monday .It's your____to clean the blackboard.
--Yes.I'm on duty today.I'll do that at once.
A.job B.appearance C.turn D.work
but,why?
说明原因,不要长篇大论的COPY!
既然答案都给出了,就表再给个字母刷分了吧．．．

我也不知该怎么解释，it’s sb’s turn to do sth是个固定句型。意思就是：轮到某人做某事。记住就行了。

turn在英式英语有（轮班工作的）一个班次的意思。在美式英语中有依次轮流各自的意思。

on duty 就是值日一看见值日么肯定是轮着做的
所以是 turn

初中英语单项选择Is this your___? 初中英语单项选择一题--Today is Monday .It's your____to clean the blackboard.--Yes.I'm on duty today.I'll do that at once.A.job B.appearance C.turn D.workbut,why?说明原因,不要长篇大论的COPY!既然答案都给出了,就表再给个 2011模拟题单项选择today chinese is becoming more and more popular. 初中英语提优试卷单项选择看图（初中英语）单项选择看图（单项选择）初中英语单项选择. Peter ( )English,music and science today.A:have.B:has.C:is. 初中英语单项选择：——where is your father?——__________.A.here he comes.B.he is coming. 初中英语完形填空和单项选择无论怎么做都错1到2题怎么办 ..单项选择第一题单项选择10题, 第二题,单项选择, 第一题单项选择单项选择第一题单项选择1题, 单项选择第一题单项选择第三题彡题单项选择.