【題目】She must have finished her homework yesterday, ?

A. mustn`t she B. hasn`t she

C. didn`t she D. doesn`t she

【答案】C

【解析】

試題分析：句意：昨天她一定完成了家庭作業(yè)，不是嗎？當(dāng)句子使用“情態(tài)動詞+have done”表示對過去情況的推測時，如果句中有過去時時間狀語，就對過去時反問；如果沒有過去時時間狀語，就對現(xiàn)在完成時反問。本句中含有yesterday，并且句中是行為動詞finish，所以使用助動詞did進(jìn)行反問。故C正確。

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