in duty,on duty,off duty,duty free区别The students ________ should clean the classroom.A.in dutyB.on dutyC.off dutyD.dutyl free请问这四个选项的意思

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in duty,on duty,off duty,duty free区别The students ________ should clean the classroom.A.in dutyB.on dutyC.off dutyD.dutyl free请问这四个选项的意思
in duty,on duty,off duty,duty free区别
The students ________ should clean the classroom.
A.in duty
B.on duty
C.off duty
D.dutyl free
请问这四个选项的意思

in duty,on duty,off duty,duty free区别The students ________ should clean the classroom.A.in dutyB.on dutyC.off dutyD.dutyl free请问这四个选项的意思
B
in duty有义务,有责任
as in duty bound
有责任,义不容辞
be in duty bound
有义务(做某事)
be in duty bound to do sth.
有义务(做某事)
on duty值班,当值
off duty下班
Only one doctor is on duty today - the other doctor is off duty.
今天只有一个医生值班,另一位下班了.
duty free免税

选B. on duty 值日
off duty 下班
duty free免税地
没有in duty这个词组。

go on duty come off duty,How wonderful every day! in duty,on duty,off duty,duty free区别The students ________ should clean the classroom.A.in dutyB.on dutyC.off dutyD.dutyl free请问这四个选项的意思 on duty on duty duty I have off duty on duty today is on duty today who is on duty on duty音标急快啊 come off duty /be off duty.意思一样吧. i'm off duty .是什么意思? Who ’s ( ) duty today?on?at?in?from? Who is on duty today?为什么用on duty _____lily______?A.Is,on duty B.Dose,on duty on duty是什么意思及用法 on duty today 什么意思? who is on duty today