You should drive _______ or you may have an accident.
carefully
careless
carelessly
careful
Are these shoes ______?
authenticitation
authentically
authenticity
authentic
Computers are famous for their ______.
versatility
versatation
versatile
versatilely
I need someone _____ to take care of the children while I'm at work.
undependable
dependece
dependent
dependable
"He's not coming home," she said _____. I could see tears on her face.
unhappily
happy
happiness
unhappy
He always thinks he is _________, but no one likes him.
excite
excitement
exciting
excited
The Davis Cup is an important ______ tennis championship.
international
national
nation
internation
These tablets should help to ease the ____.
painful
painfully
pain
pains