Her friend' name is Helen.(变一般疑问句,并做否定回答）；These are (my English books).对括号内的部分提问；Jack and Mary are my two cousins.(一般疑问句
问题描述：
Her friend' name is Helen.(变一般疑问句,并做否定回答）；These are (my English books).对括号内的部分提问；Jack and Mary are my two cousins.(一般疑问句,并做否定回答）
答
Is her friend's name Helen? No,it isn't.
What are these?
Are Jack and Mary your two cousins? No,they aren't.