按要求完成下列各题。(15分)
(1)I have __fifteen apples.(就画线部分提问)
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(2)They are dogs．(就画线部分提问)
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(3)Are those horses？(作否定回答)
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(4)I like sheep.(变成否定句)
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(5)This is a cat.(变成一般疑问句)
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