these are chinese books 改为单数形式
these are chinese books 改为单数形式
these are new books.改为单数形式
These are English books.改为单数形式
are these your books?改为单数形式
These are my English books.改为单数形式
These books are new 怎么改为单数形式急!
this your friend?(改为复数形式) 问题二Are these your books?(改为单数形式) '
These are English books .(改为单数句
These are your books.(改为单数)
they are English books.(改为单数形式)
There are English books.(改为单数形式)
are these apples?改为单数形式