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The aging population _____ each day .There must be some kind of interesting activity for the old.
A.has grownB.grewC.will growD.is growing
D

试题分析:句意:老龄化人口每天都在增长。必须有某种有趣的老年人的活动。因为是现阶段正在发生的事情,用现在进行时,所以选D。
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