单选题 Candidates who receive notifications to attend a second interview must______their intentions to proceed with the application process.
【正确答案】 B
【答案解析】解析:情态动词must后面应接动词原形,因此(B)confirm为正确答案。过去分词或动词过去式(A),名词(C),现在分词或动名词(D)都不能接在情态动词后面。