单复数转换 急死了啊

题目

单复数转换 急死了啊
this is her uncle.
that is my sister.
is that a photo?
is she your aunt?
no,she isn't.
is it a pencil sharpener?
yes ,it is.
are these oranges?
are those his friends?
are they tom's daughters?

答案

these are her uncles
those are my sisters.
are those photos?
are they your aunts?
no,they aren't.
are they pencil sharpeners?
yes ,they are.
is this an orange?
is that his friend?
is she tom's daughter? 大小写注意自己改