一、将频率副词填入适当得位置。
1. Lisa helps her mom at home. （usually）
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2. Jack is late for class. （never）
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3. He goes to school at 7:00 every morning. （always）
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4. On weekends, my father takes us to the movies. （sometimes）
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5. My brother gets good grades at school. I am proud of him. （often）
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