devoted all his life to studying math when he was young为什么是studying?

He devoted all his life to help the poor.改错! He has devoted himself in education all his life.all his life作什么成分? He has devoted all his life to education.He has devoted himself in education all his life.这两句句子有错吗?有什么区别?试分析一下成分. devoted all his life to studying math when he was young为什么是studying? Steven has devoted all his life to____films,and his wife,is also___to the duty of her profession.A.make;devoted B.making;devotingC.making;devoted D.make;devoting答案应该选C.为什么,请说明原因, He devoted all his life to work hard in people`s interests.这句话怎么错了? ( )(献身于)all his life to his career ,he could hardly spare any time for his family是填devoting还是devoted? mother teresa devoted all her life填空helping the poor. Tom devoted all his time to playing football last term. he has devotes his life to.和he devoted his life to.有什么区别吗 Tom'idea all his life 一道英语选择题（devote to）Professor Smith,who___ the research of wild animals all his life,___ to give a speech in Beijing University next week.A.has devoted to;is supposedB.devoted to;will be supposedC.has been devoted to;is supposedD.had 一道英语选择题（devote to）Professor Baker,who___ the research of wild animals all his life,___ to give a speech in our school next week.A.has devoted to;is supposedB.is devoted to;will be supposedC.has been devoted to;is supposedD.had devot As we all know,the whole life of the doctor___studying the origin of cancerA has devotedB was being devoted toC was devoted toD has been devoted to a great person is some one who devoted his life to helping others, Being a scientist, he devoted his entire life to the country. 是什么句型呢? As we all know,the whole life of the doctor____studying the origin of cancerA has devoted to B was being devoted to C was devoted to Dhas been devoted to选哪个,为什么?每个选项解释下? The project he had devoted all his energy to____for some reasonAstopping BstopCwas stopped Dhas stopped