问题描述：
按要求转换句型.
1.It had four legs.（变为否定句）还有（变为一般疑问句）
2.Tom finished his homework yesterday.（变为否定句）还有（变为特殊疑问句）
3.Pat called his best friend last night.（变为一般疑问句）还有（变为特殊疑问句）
1.It had four legs.（变为否定句）还有（变为一般疑问句）
2.Tom finished his homework yesterday.（变为否定句）还有（变为特殊疑问句）
3.Pat called his best friend last night.（变为一般疑问句）还有（变为特殊疑问句）
问题解答：
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