1. have, I, a, don't, bat, baseball. (连词成句)
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2. They have many friends. (变为一般疑问句) 
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3. We don't have a bag. (变为肯定句)
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4. We play soccer. (变为祈使句)
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5. These tennis rackets are on the chair. (就画线部分提问)
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