He failed to carry out some of the provision of the contractThe second word of "of",why is there "of" and not use with "in"?

He failed to carry out some of the provision of the contractThe second word of of,why is there of and not use with in? He failed to carry out some of the provision of the contract.two words of of,The frist word of of that can be deleted?The second word of of that can replace with in?Can i say that He failed to carry out some the provision in the contract. 翻译he failed to get a ticket He failed to pass the test反问怎么问? He failed to pass the axam,(我也） he made up his mind to succeed where hi failed? He is not young enough to carry the heavy box."carry"为什么用单数? John ___missed the 8o'clock train that morning.A.failed to set B.failed to make.c.failed to catch 哪个,为什么 He chose to carry the_(heavy)bag of the two. he managed to carry the whole play是什么意思? He has to (carry/carried) those books.选哪个 __________ to find the proper job,he decided to give up job-hunting in this city.A：Failed B：Being failed C：To fail D：Having failed What brought you to this world,he failed to take care of What brought you to this world,he failed to take care of you. He had talent that he failed to realize.that 引导是定语从句吗? He tried his b___ to study,but still failed he exam. He tried his best to quit smoking but he failed.这个句子对吗?为什么 Though he worked hard,he failed to pass the ____ exam.(enter) he didn't know why he failed to do the sales job well