题目内容
My English-Chinese dictionary has disappeared. Who _____ have taken it?
| A．should | B．must | C．could | D．would |
C
考查情态动词表示推测。根据问句可以看出语气不肯定，所以B排除。should have taken表示“本该拿（实际未拿）”，would have taken“本来会（但没有），均不合题意，可排除。情态动词could在交际用语中常表示语气的委婉，而不表示过去时，如：— Could you tell me the way to the supermarket? — Sure.（注意不能用Yes, I could.或No, I couldn’t.来回答）
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