单选题 When she returned back by abroad, she told us all about her experience as an illegal immigrant.
【正确答案】 C
【答案解析】[解析] 本题考查习惯搭配。句意为：当她从国外归来时，她告诉我们他作为一个非法移民者的全部经历。return from相当于go back from，意为“返回”。所以，答案是C。