Crossword puzzle clue "quantity of work still to be done"

Quantity of work still to be done

Opus ___ (Catholic teaching also called "the Work, work work work work")

Quantity that makes another quantity by adding an "m" at the front

Putting off work to get work done in the kitchen instead

Still green, or still red

Singer-songwriter who announced after his album "Michigan" that he would do one for every state...still...still...workin' on that one. Two down, 48 to go!

"My lecture's done, but we still have five minutes"

Source of the line "What's done is done"