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英语
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How many preblems did you have __those trees last Sunday
A to plant B planted C planting D plant
人气：319 ℃ 时间：2019-10-24 03:19:12
解答
选planting 因为 have problems in doing sth是一固定搭配.可以省略介词in.本句中就是这样.意思是：在做某事方面有困难.
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