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14. --Where have they gone?

—I thought they home,but I am not sure.

   A. must have gone   B. may have gone   C. can have gone   D. may go

14. B

14. B解析:句意:“他們去哪兒了？”“我認為 他們可能已經回家了，但是我不確定�！庇蒊 am not sure可知，是對過去情況把握不大 的推測，故用may have done結構。

must have done表示對過去情況的肯定推測； can have done表示“本能夠做某事(實際 上沒做) ”;may do表示對現(xiàn)在情況把握不 大的推測。

題目來源：2016年周測月考直通高考高中英語必修4外研版 > 周測月考卷7 Module 6綜合測試

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