一道倒装的选择题
From the top of the tower ____ at the same time.
A.did Galileo drop a light ball and a heavy ball
B.had Galileo dropped a light ball and a heavy ball
C.dropped Galileo a light ball and a heavy ball
D.Galileo dropped a light ball and a heavy ball
我觉得from引导的介词短语位于句首,就应该造成完全倒装,可是选项里没有这样的结构；我又想了一下,若是真的将句子倒装会很别扭.请问,这里不倒装是不是因为主句里面的drop是及物动词的缘故呢?