单选题
_____ the note you left, I would have forgotten to close the door.
AWith
BIn case of
CBecause of
DBut for
正确答案
答案解析
句意:要不是你给我留了便条,我肯定会忘记关门。would have done本该做某事但没做,虚拟语气。but for要不是,位于句首时句子用虚拟语气。其它选项无此用法。In case of假设,以防。