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WhenatHarvard,hespentalotoftimeimagininghowtheworld

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问题详情:

WhenatHarvard,hespentalotoftimeimagininghowtheworld

When at Harvard, he spent a lot of time imagining how the world ______ over the next 10 or 20 years.

       A.changed                                   B.has changed

       C.will change                                D.was going to change

【回答】

D

知识点:过去进行时及其被动式

题型:选择题

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