We went up to the roof, ______ we had a good view of the lake.A.whereB.from whereC.from whichD.at which
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B解析这题考查定语从句：从这个句子里看，从句中缺少的是一个地点状语，这个从句相当于we had a good view of the lake from the top of the roof所以不能用where或from which，只能用from where。句意是：我们走到屋顶上，从那里我们可以观赏很美的湖光。选B。