问题描述：
一道非谓语的题,有关于doing和having done
The total number of motor vehicles in China reached 238 million in October,(growing) by 16 million in the past five years.答案是growing但是 为什么不能选having grown
The total number of motor vehicles in China reached 238 million in October,(growing) by 16 million in the past five years.答案是growing但是 为什么不能选having grown
问题解答：
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