He worked and studied very hard ___________he wanted to provide his family with the best moneycould buy.这句表示因果关系用because,可以用as 吗?为什么?

At first he drove slowly and it worked well danny__hard for long to realize his dream and now he is popularhas worked worked为什么 （ ） he was tird,( ) he still worked hard（ ） he was tird,( ) he still worked hardA though ;but B Though;and C though;/ D although ;or he worked very hard,---he failed 1.or 2.yet 3.and 4.so He worked so hard that he __(neglect)his meals and sleep. =Mark ____ in China for 10 years and now he teaches Chinese in Britain.A.has worked B.worked Mark ____ in China for 10 years and now he teaches Chinese in Britain.A.has worked B.worked Mark_in China for 10 years and now he teaches Chinese in Britain 请说明理由 回答其他答案忽略A、has worked B、worked C、had worked Mark _________ in China for 10 years and now he teaches Chinese in Britain.A.has worked B.worked C.had worked D.is working 表目的：He worked day and night for getting the money./He worked day and night to get the money.这两都有何区别? he worked very hard to sing and dance well.这句话怎么翻译 Tom worked very hard and f( ) he passed the exam.填空 He worked as a doctor in the army and saved many s___ lives按首字母填空 Mr.Howe worked in an office.he studiedthe old thing and sometimes 这篇原文 他努力学习,最终成为班里的尖子生 He worked ( ) and ( ) ( ) at the top of the ( ). he worked very hard and hardly remembered to take a rest 3.He worked in her garden.(否定句) 4.She was fat and short.(否定句) he worked very hard at English and finally he s——in passing the English exam .