The factory ___since 1985.a.opened b.has opened c.was opened d.has been open

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• 1.When he arrived at the bus stop,the bus ________ for 20 minutes.A.has left B.had left C.has been away D.had been away2.I ______ the League for 5 years so far.A.joined B.have joined C.have been in3.The factory ________ since the February of 1988.A .has been open B.has opened C.was open D.opened4.Mary and Rose _______friends since they met in 2000.A.have made B.have been C.made D.have become5.You mustn't ________ until he comes back.A.be away B.leave
• 几道英语题求解释,谢谢When＿the hospital＿?A.did；build B.is；built C.does；build D.was；builtHow long＿the supermarket＿?Four years.   A.has；opened B.has；been opened. C.did；open D.has；been openMy glasses are broken.I will buy＿to read newspapers with. A.another one B.a new one C.a new pair D. are respectHow long＿to finish the work? A.will take you B.will you take it C.you'll take D.will it take youThe river smells terrible. People must＿waste into it. A.be stopped to thr
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• The factory ___since 1985.a.opened b.has opened c.was opened d.has been open
• Our school ____ for 60 yeas.A.has opened B.has been opend D.has been open
• 初二英语选择：The shopping mall_____ for 3 years.There are many people shopping in it every day.The shopping mall_____ for 3 years.There are many people shopping in it every day.A.has opened B.has open C.has been opened D.has been open请详细解释一下这里要不要用被动语态
• Our school ____ for 60 yeas.A.has opened B.has been opend D.has been open
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• 以正方体8个顶点中的4个顶点为顶点的四面体中仅有三个面为直角三角形的四面体32个 这是怎么算的