Crossword puzzle clue "what on earth they doing"

"What on earth ___ they doing?"

Stop doing what you're doing

"Just keep doing what you're doing, suitcases!"

"___ job's worth doing, it's worth doing well": 2 wds.

Drinks a craft beer, if you're doing it right. Am I doing it right?

If they're boring, they're doing their job

___ Saknussemm, discoverer of the center of the earth in "Journey to the Center of the Earth"

They're doing it! (in peer circles)