My friend came here to d----- the chemistry problem with me,It's so difficult请问这以“ d”开头的单词应该填写什么?

分类: 作业答案 • 2022-05-17 23:27:27

问题描述：

My friend came here to d----- the chemistry problem with me,It's so difficult
请问这以“ d”开头的单词应该填写什么?

答