Question

If he finishes his job _____, he will join us for the trip.(adverb)​

Answer 1

If he finishes the job surely, he will join us for trip.

Answer 2

Answer:

early

Explanation:

If he finishes his job early , he will join us for the trip.

Early is an adverb or an adjective. Early as an adverb can also mean 'before the time that was expected'

Hope this helps!