We came to a house stood a tall treeA. which beforeB. in front of whichC. on whichD. in w

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A. which before
(答案→)B. in front of which
C. on which
D. in which
解析：
这题考查定语从句中“介词+which”的用法：根据句意：我们来到门前有一颗高树的房子。所以介词是in front of，答案是B。