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一道高中英语选择题(Sinceitis)Sinceitistoolateformetochangemymindnow.OtocarryingouttheplanA.obligedB.setC.engagedD.had

题目详情
一道高中英语选择题(Since it is )
Since it is too late for me to change my mind now.O ____ to carrying out the plan
A.obliged
B.set
C.engaged
D.had
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答案和解析
假如是"O"是we are的话,就选A了
假如是"O"是we的话,就选D
前一种情况是被动语态
两种都是"不得不",意思一样的