She used the whole senior class to help the lower school clean up the playground on Earth Day.

她曾在地球清洁日组织整个高年级班级帮助低年级打扫操场。

youdao

I have got to organize the school clean-up day, but I don't know what to do.

我不得不组织一次学校的清扫日，但我不知道该做什么。

youdao

I have got to organize the school clean-up day, but I don't know what to do.

我不得不组织一次学校的清扫日，但我不知道该做什么。

youdao