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Aron can't swim at all.He had problems breathing in the river.为什么用breathing,不用breaths.

分类: 作业答案 • 2022-03-11 22:45:33

问题描述：

Aron can't swim at all.He had problems breathing in the river.为什么用breathing,不用breaths.

答

had problems (in) doing sth
干某事有困难