your sister is waiting you at the door?哪里错了?

She is your sister Is that ( ) your sister sister,Lily IS she your sister,Lucy? Is this your sister?与Is she your sister?区别 w_____ girl is your sister? w()girl is your sister Is that your sister?,回答 How tall is your sister? Is this your sister是什么意思 Who one is your sister? Is your sister good ( ) not ? your sister is coming是什么意思 where is your sister's sister's sister?的意思 Your sister is going back.(划线部分提问Your sister.) My sister is a singer.__ your sister ___? she is your sister怎么排列 Which is younger,you （ ） your sister? IS this your sister?(改为复数句)