I singing someone doing heard my honework while was I

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/05 11:24:51
I singing someone doing heard my honework while was I
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I singing someone doing heard my honework while was I
I singing someone doing heard my honework while was I

I singing someone doing heard my honework while was I
I was doing my homework while I heard someone singing.

while I was doing my homework I heard someone singing

I was doing my homework while I heard someone singing. 当我听到有人唱歌时我正在写作业。进行时的用法啊