How to say "在做这件事啊" (zài zuò zhè jiàn shì a) in Chinese dialogue

zàizuòzhèjiànshìa

spent on this?

Grammar Patterns
INTERACTIVE SCRIPT TIMELINE
LINE 0113:43
dào
huā
le
duō
shǎo
shí
jiān

how long have you actually

LINE 0213:44
PLAYING SCENE
zài
zuò
zhè
jiàn
shì
a

spent on this?

LINE 0313:57
lái

-Cheers. -Cheers.

Show Information
Source MediaTV Series
Season & EpisodeS1 E7
Timestamp13:44
TMDB ID244189