根据短文内容，从方框中选择恰当的单词，并用其适当形式填空

    I have a good friend. His name is David. He is 12. We are in theschool. David likes. After school, David always plays basketball with his. He likes playing basketball, because（因为）he thinks it is. He likes playing, too. Heit is fun. But David doesn't like ping pong, because he thinks it is. David has a basketball, three tennis, two baseballs, a volleyball and two ping-pong balls. Where are they? They'rehis bed.

    David is a nice boy. I like playing sportshim.