The factory opened ten years ago它的被动语态

The factory ___since 1985.a.opened b.has opened c.was opened d.has been open The factory opened ten years ago 改同义句 The factory opened ten years ago它的被动语态 同义词转换The factory opened twenty years ago.The factory ( ) ( ) ( ) for 20 years. The factory opened ten years ago.同义句The factory ___ ____ ____for ten years The factory opened ten years ago.同义句是：The factory ---- ----- ----- for ten years. The factory opened twenty years ago.（同义句） TThe factory opened twenty years ago.（同义句） The factory（ ） for twenty years ago. the factory has been open for twenty years 还是the factory has been opened for twenty years? Mr.Smith has been here since the factory opened为Mr.Smith has been here since the factory opened为什么用has been? The river ________ (become) dirty since the paper factory was opened up. they .here since the factory opened.A:have lived B:had lived The factory has been_____for two yearsA.open B.to openC.openingD.opened we have worked there since the factory opened.为什么不是had The factory opened ten years ago.它的俩个同意句 88.The factory _______ since the May of 1999.A.has been open B.opened C.has opened D.has been 英语：the factory usually stays ____ A.open B.opens英语：the factory usually stays ____A.open B.opens C.opened D.openly The river and air __(pollute)since the paper factory opened last yearThe river and air 单数还是复数 He said that the factory ______ for several years.A.has opened B.opened C.had been open D.is opening并分析考察的知识点,