按要求转换句型.
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）
答
Answer:
1.It didn't have four legs.
Did it have four legs?
2.Tom didn't finish his homework yesterday.
3.Did Pat call his best friend last night?
特殊疑问句应对划线部分提问的