Work hard pay out

Work hard pay out Some day,all our hard work will pay he got a pay raise for his work hard请问这里的work hard对吗? he got a pay raise for his work hard请问这里的work hard错在哪? li lei tried hard ____(work)out the problem To deserve a pay increase,you need to work very hard. After ten years of hard work,the couple____to pay off all the debtsmanagedsucceededmissedcould He has to do much hard work,but he __(pay) less, Pay afttention( )you study .Thank you( )you hard work.What's( )today's newspaper?Math is hard Work hard work hard work hard at hard play hard-work hard It's a hard work for me to work out shis problem.请将上句改错 work work hard To work out the problem is very hard .(同一句) _____ is very _____ _____ work out the problem . how do you keep fit?i keep working out every day为什么填work out 不填work hard? __can you except to get a pay rise ,A.with hard work B.although wrk hard C.only with hard work D.now that he works hard选哪个?为什么?