1. Mark wants to be a vet in the future.(否定句)

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2. That is Betty’s new wind-bell.(对划线部分提问)

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3. My brother is riding his bicycle in the Century Park.(对划线部分提问)

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4. The fox likes sour grapes. The fox likes sweet grapes.(选择疑问句)

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5. It’s four forty-five.(另写一句，意思不变)

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6. What time does your father have lunch?(按照实际情况完整回答)

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