"For" & "Since"

_________ is used to indicate the duration of an event that started in the past and continue up to "now"

_________ is used to indicate the moment an action started in the past (year/day/month/ hour).

What word do we use with these expressions? 2 years / 5 months / 8 hours

What word do we use with these expressions? last year /1998 / last September

I've learned French ________ last December.

Lisa has practiced piano _______ 2 hours straight every day.