I am ______ duty this morning.填什么填on还是in?

I am ______ duty this morning.填什么填on还是in? I am on duty this morning. Who's at duty today?I am哪里错了 找错：Who is at duty today?I am. -hello 21324-4655 -hello____ -speaking!1 is that jim speaking 2 who are you--______-I am1 is that jim 2 who is on duty todayarenot you a teacher______I am a doctor 1 no,i am not 2 yes,i am 3 no ,i am 4 yes,i am not 英语翻译I am not ______ _____ ______. I am ___ duty today中间应该填什么?如何翻译duty today ,以及整句话的意思? be off duty.duty 是宾语还是表语啊?I am off duty.我下班了.duty 这里是名词吗?off 句子里面做什么?呵呵。那off 这里是介词啦？介词宾语是 duty? ,I believe i am the best cholce for you!I thi,I believe i am the best cholce for you!I think ,l'm every good! I think Ann must____on duty today A.be B.is C.are D.am为什么? I am a student, my duty is study hard.中文是什么意思? I am _______ duty this week A.in B.at C.on D.for i am __ duty a.on b.in c.at d.to Who is ( )duty I am.A.in B.on c.of d.for Who' s ______ duty today? I think It's my duty ______ make meals for my childen.不可灌水 I have off duty 英语翻译I am sorry ______ _______ you.