Hard-working is the reason ____ the success.填什么?特别想知道的是为什么用for?用of可以吗,为什么?

The girl is working hard感叹句 Working hard is the key to sucess 这里的主语是Working hard Jason is the most hard working student()all the student 英语翻译the government is working hard to save the panda. The girl is hard-working.(改为感叹句）怎么改? he is working hard ----(be) the top student越快越好 The boy is hard working 还是 The boy is hard-working 在这里hard-working做表语不是定语,短横还要加么急求,谢谢 Daniel is the most hard-working student in our class 同义句 Daniel is the most hard-working student He is working hard people 对working life was hard for the working class和life is hard for the working class有什么分别 The boy is working hard on his studies?对hard 提问 急求~1.Hard-working is the ------ ------ ------ ------(成功的原因)1.Hard-working is the ------ ------ ------ ------(成功的原因)2.I think this is ---- ---- ---- ----- ------ ------(做此事的最佳方法) English questionThe Chinese people _______brave and hard-working.The Chinese_____a brave and hard-working people.A.is,are B.are,are C.are,is D.is,is To students ,the most important thing is---- their lessonsA.working hard B.working hard toC.to work hardD.to work hard at the bridge is in the _____(进程)of being built.the workers are working hard. Mike is working hard.(变为感叹句)( )( )Mike is working! the nurse is very tired----she is still working very hard the girl is hard-working.（改为同义句）the girl___ ____ ____.三个空