She must have seen the blind man many times , ____ she ?
A．haven''tB．didn''tC．hasn''tD．hadn''t
C。
在構(gòu)成對(duì)過(guò)去事情推斷的反義疑問(wèn)句中，后面用過(guò)去時(shí)還是用完成時(shí)，得視語(yǔ)境和句子結(jié)構(gòu)而定，即：有過(guò)去的時(shí)間狀語(yǔ)，用 did；沒(méi)有時(shí)看語(yǔ)境。
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