Is that your baseball 改为复数句

Where’s the baseball?和Where are your books?中文是什么 Where’s the basebal Is that your computer? that is your pen. Is that ( ) your sister is that your friend? is that your desk? Is that your that is your bilk is------------- Is that your pencil是什么意思 Is that your sister?,回答 I hope that is your That is your pencil,__ IS THAT YOUR BYOTHERS是什么意思 Grrr!Is that your coat? Is that your final answer?; ) Is that your love.Not that ID card your is Is that your estate Yes,it is