1.What's this in English?(变为复数句） 2.This is a pencil case.（同上）
问题描述：
1.What's this in English?(变为复数句） 2.This is a pencil case.（同上）
3.Is this girl your friend (同上）
4.Are those oranges?(变为单数句）
5.They are my brothers.(同上）
答
What are these in English?
These are pencil cases.
Are these girls your friends?
Is this an orange?
This is my brother.
希望能够帮到楼主