按要求写句子。
1. They checked their birthday on by one.(写出问句)
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2. They were in school.(改为一般疑问句)
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3. My mother gave to me two storybooks.(改为否定句)
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4. My birthday is September 4th. (就划线部分提问)
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5. He walks to school every day.(用yesterday代替 every day)