they're or anges改单数句

they're or anges改单数句 They‘re eggs 改为单数句 they're expensive knives.改为单数句 they are good friends 改单数句 they are my friends改单数句 they are offices.怎样改单数句 Are they birds?改单数句 They're from America.改同义句. they,re的单数 How does it smell?(改复数句) They're sour (改单数) My father can drive a car (一般疑问否定回答) 你好、Are they student 改为单数句怎么改? They are some good dictionaries.改为单数句怎么改 把they are boxes.改为单数句怎么改 They are my old friends.(改单数句）______________________________. They are waitresses.(改单数句) ____ is a waitresses. 将句子:They have some balls.改单数句. They are orange schoolbag改为单数句,怎么改啊! they're talking帮忙改一下否定句和疑问句