按要求完成句子。
1. I bought you this book. (写出同义句)
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2.Ann gave her little brother a bag. (写出同义句)
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3. a, about, book, was, space, it, travel(.) (连词成句)
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4. They can ride their bicycles.(改为一般疑问句)
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5. It is my birthday today. (用yesterday改写句子)
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