他和她是姐弟 是he and she are brothers and sisters还是he他和她是姐弟 是he and she are brothers and sisters还是he and she are brother and sister加不加s

问题描述:

他和她是姐弟 是he and she are brothers and sisters还是he
他和她是姐弟 是he and she are brothers and sisters还是he and she are brother and sister加不加s

You and he are siblings