英语,下列句子改成一般疑问句,肯定回答和否定回答

1.this is gina.
一般疑问句：Is this Gina?
肯定回答：Yes,it is.
否定回答：No,it isn't.
（以下按此顺序回答）
2.that is his brother.
Is that his brother?
Yes,it is.
No,it isn't.
3.he is my good friend.
Is he your good friend?
Yes,he is.
No,he isn't.
4.these are nice pictures.
Are these nice pictures?
Yes,they are.
No,they aren't.
5.those are school things.
Are those school things?
Yes,they are.
No,they aren't.

把be动词提前就是一般疑问句了 保持原句不变然后再在be动词后加Not就是否定句了 你的原句就是肯定句 不必改