The box isn't light enough for kangkang to carry 改为同义句.
问题描述：
The box isn't light enough for kangkang to carry 改为同义句.
答
The box is so heavy that Kangkang can't carry it.
= The box is too heavy for Kangkang to carry.
不明白的再问哟,请及时采纳,多谢!