They were my friends 改为否定句

They were my friends 改为否定句 They are good friends.改为否定句 These are my friends.改为否定句 They are my good friends.改为一般疑问句和否定句. They are my friends.改为单数句 They are my boxes 改为否定句 they are my aunts.改为否定句 they are good friends on the internet.【改为否定句】 they were having an important meeting改为否定句 They were students ten yeas ago.改为否定句 they were on the farm last saturday.改为否定句 they were busy yesterday evening.改为否定句