根据句意,用括号内所给单词的适当形式填空。
I think this bag is one of the ________ (speak) .
How __________ (careful) the boy is! He left his key in the library.
Little Kitty likes hiding ________ (her) behind the door to frighten her friends.
The two         (rob) got into the car and drove away.
We played ____________( happy ) in the park yesterday than we did today.