按要求改写句子，每空只填一词。
1. He often does his homework after supper. ( 改成一般疑问句)
_______ he often _______ his homework after super?
2. They were excited at seeing the film. (改成感叹句)
_______ _______ they were at seeing the film.
3. He has learned to play the piano since he was five years old. (对划线部分提问)
_______ _______ has he learned to play the piano?
4. English is so hard that I can't learn it well. (同义句)
English is hard for me learn it well.
5. Both Lucy and Kate are Americans. (否定句)
_______ Lucy Kate is an American.
