句型转换。
1. We can wear hats in school. (变成否定句)
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2. We can eat in the cafeteria. We can't eat in the classroom. (用
but 将两句话连接起来)
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3. You have to wear sneakers for gym class. (变成一般疑问句,并作肯定回答)
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4. I have to do my homework after school. (就划线部分提问)
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5. I have to be in bed by ten o'clock. (就划线部分提问)
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