When I got home last night, I was frightened to find that in front of my door .
A. sit a dog
B. sat a dog
C. was a dog seated
D. did a dog sit
网友回答
A. sit a dog
(答案→)B. sat a dog
C. was a dog seated
D. did a dog sit
解析：考查倒装句。本题中把表示地点的介词短语in front of my door放在了句首，后面的主语是名词，故使用全部倒装的形式；句意：当我昨天晚上到家的时候，我很惊讶第发现在门前面坐着一条狗。故B正确。