yes,it is改复数句

yes,it is改复数句 Is this a plane?yes,it is 改复数句 It is a calf(改复数句) Is that your parent? Yes it is改为复数句 yes,it is.变复数 求初一英语好的大神进 急This is my map（改为复数句） 2.Is it your box（改为复数句） 3.Yes, it is（改为复数句） 4.That is my sister（改为复数句） 5.No,she isn't（改为复数句） 6.Are these oranges(改 Yes,it is 的复数形式 Is it your radio?Yes it is 改为复数 it's a ruler?改复数句 It is a classroom 改复数 It is a baseball bat.改复数 how much is it 改写成复数 this is an orange改复数句 This dress is mine改复数句 is that a mouse?改复数句 this is my knife改复数句 Is this your pencil?Yes ,it is.变复数 it is an exciting race (改复数句子)怎么改?