this boy is my goog frierd改成复数形式
this boy is my goog frierd改成复数形式
This is my backpack.改成复数形式
this is my pen pal改成复数形式
this is his brother(改成复数形式) that is my sister(改成复数形式) those
this,that,is改成复数形式
this is an apple.改成复数形式
Is this yuor brother改成复数形式
this is my desk改成复数句
This is my dress.改成复数句.
this is a boy is schoolbag 变为复数形式
This is my friend 改为复数形式
This is my sister.改为复数形式、