选择正确的单词填空。 1. My sister is ____ (in/ on/ at) her twenties. She _____ (wears/ is/ does) a blue shirt. She _____ (does/ has/ is) smart. 2. My brother _____ (has/ is/ are) pretty tall. He gets along well with the people around him, so he is _______ (friendly/ rude/ brave). 3. My cousin Linda _____ (does/ has/ is) long blond hair, and she _____ (have/ is/ does) of medium height. She likes to help others, and she is a _______ (funny/ helpful/ polite) woman. 4. My uncle _______ (does/ has/ is) a middle-aged man. He likes telling jokes, so he is very _______ (smart/ helpful/ humorous).