Which questions are possible to ask and what is the meaning of possible questions?

We'd say doing it, that, this, etc

Span: I was doing it through February and March of 2002 but I might resume as early as next week

Likely brief period: I ate that banana yesterday afternoon. If it was you who threw the peel at Mom, when did you do it

Finish or cleanup: Last time, just before I left home two weeks ago. Times previous I had swept up the debris whenever time permitted

An activity unlikely to be repeated: I had beat my wife briefly in 2001, then throughout 2007 when she finally died

Crazy this sort of thing can be very difficult, many of us resenting another's apparent homework. You might achieve more reply breaking your task into several smaller threads spaced a day or three apart

I will however transmit a link to my Better Half who is much smarter than I, and if she responds I will fwd any further comment

Good luck tho, I do admire your typical esl tenacity and determination, attention to detail and subtlety