He has worked very hard__he left school.A.for B.befor C.since

He has worked in the company for 15 years.H ( ) ,he,doesn~t In the past three years ,he ____ very hard at maths. A.works B.worked C.has worked Dis workin He has worked very hard__he left school.A.for B.befor C.since word form.i am happy he was _____.He has worked very hard over the pass year.(promote) While_______money,he had worked very long hours He has already worked for() hour. He has worked there (s) last year he has worked at...和he has been worked at..有什么区别?哪个对呢? He hard worked in the company for 15 years ,H______,he doesn't like this work.My sister has many friends ,she is very o_______ -How long has his father worked in that city?-he has worked there s___ last year. He said he ( ) in that factroy since 1949.A.has worked B.had worked C.worked D.was working He worked very hard,and____(earn)a lot of money. He has worked for a whole day回得来 修改病句:He has worked in Benijing last year. he has worked out the problem.的被动形式 How long has he worked in the radio studio? Can you tell me.合并成宾语从句是he had worked 还是he has worked说明一下理由 He said ______for the firm for over ten yearsA.has worked B.had worked he has worked as a teacher for only two weeks .he has little e ____