I'm on duty ( )this morning

I'm on duty ( )this morning I am on duty this morning. I'm on duty today翻译 i'm off duty .是什么意思? I am ______ duty this morning.填什么填on还是in? I am _______ duty this week A.in B.at C.on D.for will you be on duty this week or next week?—__________.A yes I will B Of course not C I hope so D I'm not sure --I'm sorry I stepped outside for a smoke.I was very tired.--There is no_____for this while you are on duty. A reason B excuse C cause D explanation谢谢大家,翻译一下.上下,都翻译哦?二句 I'm on duty Today .first of all ,let's play a game on duty on duty I'm on ( ) today.A.line B.duty C.turn D.time 选一个快哦!呵呵~ - She doesn't pay any ____ to her clothing.When I tired to persuade her,she took-I'm sorry I stepped outside for a smoke.I was very tired.I was very tired.-There is no ____ for this while you are on duty.A.reason B.excuse C.cause D.explanation I can on duty 的用法 :the students on duty ___(sweep）the floor when I walked into room on duty today is on duty today who is on duty on duty音标急快啊