That's my dress

That's my dress that is my sister s dress 用whose提问 That's my dress.如何改成复数句? that ,s my dress 对后两个单词提问 that is my dress.改为复数形式 Look at that dress.It 's pretty. what‘s jane like in that dress That's really a pretty dress与That's a really pretty dress,这二 Whose is this dress?It‘s my daughter’s .It’s her dress. 把That is a dress.That ia a Karen's dress.That ia a Karen's r that's my pen. that’s my obsession