they are good friends 改单数句
they are good friends 改单数句
they are my friends改单数句
they are good friends.改肯定句
They are my good friends改为单数句
They are my old friends.(改单数句)______________________________
They are some good dictionaries.改为单数句怎么改
they are my good friends改否定
They are my friends.改为单数句
They are our friends变单数句
改同义句 Athough they are good friends,they are not the same
They are good girls.改为单数句
they are offices.怎样改单数句