根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Ann is a middle school student. She has a sister 1 a brother. They are Helen and Paul. Ann and Helen can 2. Ann can sing and play 3 well, but Helen 4. Helen doesn't like playing the instruments. She 5 chess, but she doesn't play chess 6 Ann. Ann can't play chess. Helen often plays with Paul, because Paul plays 7 very well. Paul can 8 play basketball well. And he is 9 the school basketball club. He often 10 other students with basketball.