阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

    I have some great friends at summer camp. They can all do different (thing). This is Helen. She's good at (musical). She can sing, and she can play piano. Oh, she's a (greatly) dancer, too. But she can't cook. And she can't play the guitar. Tom is (real) cool. He is from America. He can speak Chinese well, and he can ride a motorbike. He can't play the piano the guitar, but he can sing·

    Then this is (I) sister Alice. She can run really fast, and she can (player) basketball and soccer. She can ride a bike. But she can't ride a motorbike.

    Charles (do) well in sports. He can swim, and play tennis and basketball. He can run fast, too. he can't cook. Julie can speak Chinese, and she can cook, too.