根据要求变换句型。
1. We want to join the chess club. ( 改成否定句)
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2. David can play the guitar. (先改成一般疑问句，然后作肯定回答)
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3. Wudong can play football. (就划线部分提问)
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4. want,join, swimming, they, club, to, the (组词成句)
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5. She can play the trumpet. (改成否定句)
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