根据句意和所给首字母填写单词。
Jane can play the piano, but she can't play it well. She n       to practice more.
I really like sports. I want to join a sports c          
Bob was very s           two year's ago. Now he is tall, and he's the tallest in his class.
Yesterday evening, Mary t           a walk with her mother after dinner.
My sister studies h          , and she usually gets good grades in exams.