He s lived in London______.A.since a long timeB.for some timeC.long beforeD.some time ago

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He s lived in London______.

A.since a long time

B.for some time

C.long before

D.some time ago

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。