用括号中所给词的适当形式填空 1. He spent two hours _ (do) his homework. 2. He is a famous____ _(piano). 3. When were you______(birth)? 4. How many______ (play) are there in a football team? 5. The movie______ (call) Harry Potter is my favorite. 6. Can you hear a girl ______ (cry) in the next room? 7. Who was the first one______ ( reach) the top of the mountain? 8. Deng Yaping ______(join) the national table tennis team in 1988. 9. We all stopped______ (talk) when our English teacher came in. 10. She__ __ (start) ice skating when she was six.