I___in London for many n to move back to China.A.livedB.was livingC.have livedD.had lived选A不选D?

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• I___in London for many n to move back to China.A.livedB.was livingC.have livedD.had lived选A不选D?I___in London for many years ,but I've never regretted my final decision to move back to China.A.livedB.was livingC.have livedD.had lived选A不选D?
• I___in London for many years,………………为什么填livedI___in London for many years,but i have never regretted my final decision to move back to China.A.livedB.was livingC.have livedD.had lived为什么选A不选D?for + 一段时间不一定就是完成时?这道题为什么不是过去完成时呢.就是说,在决定回中国之前 我就已经在LONDON住了很多年了?在什么情况下用过去时就够了,而不需要用完成时?
• I___in London for many n to move back to China.A.livedB.was livingC.have livedD.had lived选A不选D?
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