chinese is not easy for me ,but i like it very much .i 'm going to work hard at it.请问这句中的work hard at 是什么意思?

Chinese is more difficult than English.同义句Chinese is not ____ ____ easy ____ English. SurvivaL is not easy the chinese is not easy enough for me 不对错在哪里 is,for people,easy,it,Chinese Life is simple not easy Gymnastics is not ___(easy) Not everything is so easy life is not so easy as you Love is not easy 什么意思 science is not easy的意思 To make money is not easy! working hard!life is not easy! You dream is not easy come I think it is easy to study Chinese. chinese is not easy for me ,but i like it very much .i 'm going to work hard at it.请问这句中的work hard at 是什么意思? Chinese is not easy _____ me,but I like it very much.A.for B.of C.about D.on说明原因 it is not easy for a Chinese person to speak English as_as a_English speaker.横线上填什么?空格线上填什么? it is not that easy 中文是什么?it is not that easy 中文是什么?