怎么把这些转换成单复数形式?

题目

怎么把这些转换成单复数形式?
1.These are Alice's parents.
2.This is your an orange.
3.Those are my watches.
4.This girl is my cousin.

答案

1.This is Alice's parent.
2、These are your oranges.
3.That is my watch.
4.These girls are my cousins
this that这两个指示代词的复数为These those
其他就变复数就行了