Lamborghinis are very fast/fastly
fast
Please don't walk so quick/quickly
quickly
The English test was very easy/easily
easy
She is a bad/badly student
bad
He is a good/well footballer
good
Georgianna played the piano very good/well
well
My dad works very hard/hardly
hard
Sasa is not very happy/happily today
happy
Drive careful/carefully
carefully