Complete the sentence using an adjective or adverb?

I. Complete the sentence using an adjective or adverb.
He's always in a rush. I don't understand why he walks so ____________ (quick/quickly).
I prefer studying in the library. It's always_______________ (quiet/quietly).
Michael __________ (happy/happily) took the assistant job. He had been looking for a position all summer.
Marta dances _____________ (beautiful/beautifully). She's been taking ballet since she was five years old.
They speak French very ____________ (good/well). They lived in France for two years.
My neighbor always plays ___________ (loud/loudly) music on the weekends. It's so annoying.
Please be __________ (careful/carefully) in the hallway. The walls have just been painted.
Dan is very smart, but he is not a very___________ (good/well) student.
He reacted __________ (angry/angrily) to the news. I have never seen him so upset.
We didn't ______________ (complete/completely) understand the teacher's instructions. Most of us did not finish the assignment.