Overthepastthreedecadesthenumbero

发布时间：2020-07-26 17:07:34

Over the past three decades the number of students leaving home each year to study abroad ________ at an annual rate of 3.9 percent, from 800,000 in 1975 to 3.5 million in 2008．A.grewB.growsC.have grownD.has grown

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D
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