when____by,I saw them playing basketball on the playground这里的横线上应该填passing还是passed

分类: 作业答案 • 2022-01-02 13:40:45

问题描述：

when____by,I saw them playing basketball on the playground
这里的横线上应该填passing还是passed

答

passed
你上初中吧
When后面不加ing
While后面加ing

答

passing when (I were) passing by