按要求改写句子。 1. I always exercise in the morning.(改为一般疑问句) ____________________________________ 2. My sister likes playing football .(变为否定句) ____________________________________ 3. I often get up at 6:00 . (变为一般疑问句) ____________________________________ 4.They get to the bookstore at eleven o’clock.(对划线部分提问) ______________________________________ 5. He is a strong and healthy boy.(改为一般疑问句) ________________________________________