单选题 She looked everywhere for her book but finally had to return home without it.
【正确答案】 C
【答案解析】lastly“最后地,终于”;at the end“在……的末端,在……的结尾”;at the last:一般有at last或to (till) the last,而无at the last。题目中的finally意为“最终,最后”,只有C与之意思相同。