---Excuse me, when you the girl over there? ---Last year in Beijing. And I her for about one year.A.have known; have knownB.did know; knewC.did know; have knownD.have known; knew
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C解析根据答语内容的回答Last year in Beijing，可知第一空问句应该用一般过去时，而第二空根据时间状语for about one year，可知