Rewrite the sentences(按要求改写下列句子) :
1. Ben, hold the glass of water above the paper, please.(改成否定句)
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2. I want to go up to the sky.(根据划线部分提问)
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3. We are thirsty.(根据划线部分提问)
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4. I brush my teeth twice every day.(根据划线部分提问)
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5. The dolphins are jumping and swimming in the pool.(改成 can 句型,根据划线部分提问)
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6. The Yellow River runs through many cities of China.(改成一般疑问句)
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7. Kitty pours the tea into the cup.(根据划线部分提问)
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