根据句意,用括号中所给词的适当形式填空。(共5小题,满分5分)
How ______________(care) you are! You’ve knocked the cup off the table again!
Don’t be afraid of making __________. They help you learn. (mistake)
Tom thinks people will help him if he asks for help (polite).
The _______ (nineteen) World Book Day was on April 23,2014.
It’s very __________for us to study in group. (help)