英语作业,帮帮忙1.This is a ruler.(改为一般疑问句.并作否定回答）____ ____ a ruler?

英语作业,帮帮忙
1.This is a ruler.(改为一般疑问句.并作否定回答）
____ ____ a ruler?
NO,____ ____.
2.That is an English book.(改为复数形式)
____ ____ are English ____.
3.These are eggs in English.(改为单数形式)
____ is ____ egg in English.
4.These are apples in English.(对划线部分提问)
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____ ____ these in English?