I have a sister.She works in Beijing.I have a sister who wor

I have a sister.She works in Beijing.I have a sister who wor I have a sister who works in Beijing.= I have a sister.She w I have a sister who works in Beijing.这句的who指代的是a sister吗 改为简 I have a sister who plays piano. i have a sister who lives in Pairs I have a sister 改写 i donts have a sister还是i dont have sister I have a sister she is eight=I have_________sister My sister I have a sister Marry.She is 16 years old now.She 英语造句的问题I have a sister who plays piano.可以改成I have a sister s I have a sister ,too,but she is in the photo.这里用is I have a sister的同义句