Are they Ann's girl friends 改为单数

问题描述:

Are they Ann's girl friends 改为单数

Is shi Ann's girl friend? are改为单数is,they改为单数she因为是girl friends改为单数friend

Is she Ann's girl friend?

Is she Ann's girl friend?
分析:are改为单数is,they改为单数she,girl friends改为单数girl friend

is she ann's girlfriend