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