working hard is our duty .是duty 还是duties呢

ann is one of hard- working students in our class.hard -working的用法是否正确 working hard is our duty .是duty 还是duties呢 Mr Wu is a ___ and popular teacher in our schoolA hard-workingB working hardC working-hardD hard working Daniel is the most hard-working student in our class 同义句 Daniel is the most hard-working student Everyone in our class is hard-working 改同义句Everyone in our class is hard-working 改同义句Everyone in our class ___ ___ He is working hard people 对working Our teacher are always_______ Yes.We all thank thA.work hard ; hard working B.working hard ; hard work C.hard working ; work hard D.hard work ; hard working hard working,our,kind,teacher,math,is,and连词成句 our government is working hard to save pandas中的动词不定式做什么成分 is,office,our,very,assistant,hard-working用所给的词语组成句子 Our government is working hard to save panda.其中不定式的用法 Daniel is the most hard-working student in our class.（同义句改写）Daniel is------- ----------- -------- ---------- ---------------boy in our classDaniel is------- ----------- -------- ---------- ---------------boys in our class------------- - Mike is working hard.(变为感叹句)( )( )Mike is working! our teacher( )for us(填哪个hard work、hard working、work hard、words hard) he is hard working.与he is hard our english teacher is working hard.He teacher us pretty_______ A:well B:better C:good D:best The girl is working hard感叹句 is jack hard-working?咋做