问题
选择题
They arrived at the farmhouse, in front of which _________.
A．is sitting a boy
B．sat a boy
C．a boy sat
D．a boy is sitting
答案
答案：B
地点状语放在句首构在完全倒装，即主语与谓语直接颠倒位置，不加助动词。选A、D与主句时态不符，选项C应构成倒装句才对。
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