Helen and her sister are in Tom'party.这句英语哪里错了,请改错.

Helen and her sister are in Tom'party.这句英语哪里错了,请改错. 改错：David and Helen are sister and brother Susan often help Helen and her English改一般疑问句 Are Jeff and Helen her parents?翻译成中文! Helen and her cousin have different __(爱好). usually helen car sister takes her to go school to 连词成句 amy and her sister ____ twins Lucy and her sister have (d ) hobbies Tom's Helen's brother.Helen is Tom's sister.（合成一句话）合成如下句型Tom and Helen ____ ____ and ____ . Mars and helen are twins .Mars says ,Ihave a sister .But helen doesn't admit that she has a siste Ashe told Helen to look after her little sister.这句话的her是谁的?是谁的小妹妹?Ashe的还是Helen的? she is his sister,helen. these two girls are not my sister cindy and my cousin helen 的一般疑问句 two,are,these,my,girls,sister,Cindy,my,cousin,Helen,and.（连词成句 often,her,helen,and,xisits,uncle,her,the,weekends,cousin,at(.)连词成句 She looks like her sister.(改为同义句) She and her sister ____ ____ ____ Mary shares a bedroom with her sister.同义句转换Mary and her sister live ( )( )( )bedroom. A.her Kate B.her sister and Kate C.her sistsister's and er and Kate's D.her sistaHow's Joy's skirt? A.her sister's and Kate B.her sister and Kate C.her sister and Kate's D.her sister's and Kate's 选哪个?How's Joy's skirt?A.her sister'