Answer:

ATIT

Answer	Crossword Clue
ATIT	Way to go?
ATIT	Busy
ATIT	Squabbling

ATIT	Toiling away
ATIT	Working hard
ATIT	Bickering
ATIT	Busily working
ATIT	Really busy
ATIT	Working away
ATIT	Working diligently
ATIT	Works diligently

ATIT	Engaged tooth and nail
ATIT	"Look ... this way"
ATIT	Going full tilt
ATIT	Going full throttle
ATIT	Have .. (battle)
ATIT	Went .. (battled)
ATIT	Going .. (fighting)
ATIT	Keep .. (don't stop)

ATIT	Keep .. (persevere)
ATIT	In the act
ATIT	"While you're ..,..."
ATIT	"While you're ....."
ATIT	Persevering
ATIT	"While you're .. ... "
ATIT	Toiling or bickering
ATIT	On the job

ATIT	Having a tiff, say
ATIT	Fighting
ATIT	"I'll take a whack ..."
ATIT	"Keep ...!"
ATIT	"Have ...!" ("Go ahead!")
ATIT	"They're ... again!"
ATIT	Hard ...: slaving away
ATIT	Plugging away

ATIT	"They're .. again!"
ATIT	Arguing
ATIT	Going ..: fighting
ATIT	Up to no good, perhaps
ATIT	Battling

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.