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14．My mobile phone is missing．Who _____ it？（　　）
A．must have takenB．should have taken
C．could have takenD．need have taken

分析 我的手機不見了；可能會使誰拿的呢？

解答 答案是C．本題考查"情態(tài)動詞+have done"的結構．must have done用在肯定句中表示推測"肯定已經…"；should have done是虛擬語氣"本應做但事實上卻沒有做"；could have done既可表示虛擬語氣"本可能…"，也可以用在否定句和疑問句中表示對過去的或已經發(fā)生的事件的推測"可能已經…"；通常不用need  have done．根據句意可知，說話人詢問"可能是誰拿了呢？"，是疑問句中表示推測，由此判斷答案選擇C．

點評 要在正確理解情態(tài)動詞的基本含義的基礎上，整體理解語境中的情感態(tài)度，做出合理的判斷．

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