That day is (fast) approaching.
fast
I realized that years past (quick).
quickly
Is he (serious) asking that question.
seriously
I feel (good).
well
You should drive (slow).
slowly
Please talk (quiet) during the movie.
quietly
I play the piano very (good).
well
She can't talk (clear).
clearly
You must answer (correct).
correctly
I want you to answer (honest).
honestly
He appeared (sudden).
suddenly
The neighbours shouted at us (angry).
angrily
I ran home (quick) when it started raining
quickly
She didn't want to make any mistake so she answered her questions (careful).
carefully
Get here (quick)!
quickly
I will help you (happy).
happily
You are behaving (bad) today.
badly
I'm going to go to sleep (early). I have to weak up at 7am.
early