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.