Question

We went up to the roof, ______ we had a good view of the lake.

1. A.
   where
2. B.
   from where
3. C.
   from which
4. D.
   at which

Answer 1

B
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。