to do someone’s job temporarily
jemandes Job vorübergehend übernehmen (jemandes Job vorübergehend übernehmen)
"I had to fill in for my colleague while he was on leave."
"Ich musste für meinen Kollegen einspringen, während er im Urlaub war." (Ich musste **fill in for** meinen Kollegen, während er im Urlaub war.)
to suddenly become very angry
to fix small errors or issues in software
to talk openly about problems to resolve them
to share earnings or gains equally or based on agreement
to return something to its place; to delay an event
to be the first to take action or make a decision