题目内容
根据括号内的要求回答问题
I can sing．(改为否定句)
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I can't sing．
He wants to join the chess club．(就画线部分提问)
What's your name,please？(改为同义句)
Sally can play the trumpet．(改为一般疑问句)
What can you do？(根据实际情况回答问题)
