Is that your pen?作否定回答

Is that your pen?作否定回答 Is that Mary's pen?作否定回答 that is your pen. That is her pen.改为否定句That her pen. Is that your English dictionary?作肯定和否定回答 IS THAT YOUR SISTER?(作否定句） Is that your cousin?（作否定回答） That is my pen的否定句 That is hie pen(改为否定句) That is a pen in English.(对画线部分提问,线划在a pen那里） I can spell pen.(作否定回答） Is this her pen?(作否定回答）,it . That is my picture（改为复数句） Is she your daughter?(作否定回答) is that your friend 改为复数句 is this his backpack作否定回答 is your pen pal from china?否定回答 Is this your pen变成肯定句和否定句 Is this your pen?（做否定回答） is this a red pen 改为复数句,并作肯定回答is that an english book?改为复数句,并作否定回答 That is his pen.(改为否定句）