__________he___________the old man before?(see)When he called,I_______(work)

__________he___________the old man before?(see)When he called,I_______(work)
__________he___________the old man before?(see)
When he called,I_______(work)

__________he___________the old man before?(see)When he called,I_______(work)
____Did______he____see_______the old man before?(see)
When he called,I__Was working_____(work)
这是我在静心思考后得出的结论,
如果不能请追问,我会尽全力帮您解决的~
如果您有所不满愿意,请谅解~

Did see
Was working

Did see
was working

Did see
Was working