They are my good friends改为单数句
They are my good friends改为单数句
They are my friends.改为单数句
they are good friends 改单数句
they are my friends改单数句
Those are my friends 改为单数句
They are good girls.改为单数句
They are good friends.改为否定句
They are my aunts.改为单数句
They are my good friends.改为一般疑问句和否定句.
They are my old friends.(改单数句)______________________________
英语学霸进来看看,They are my friends改为复数句打错字了,是单数句
They are some good dictionaries.改为单数句怎么改