【題目】My dictionary has disappeared. Who do you think ______ have taken it?

A. should B. must C. could D. would

【答案】C

【解析】考查情態(tài)動詞的用法。此處句意為：我的字典不見了，你認為會是誰拿走了呢？ A. should 應該 B. must 必須；一定 用于肯定句 C. could 能夠；可能 用于否定或疑問句 D. would 將要。題干中有have taken ，對過去表示推測，可能已經(jīng)做了，用could have taken。故選C。

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