答案：B

题目分析：完整的答语应该是— What? He was to have applied to the department for the position yesterday.

点评：句子中的某个词、短语甚至整个从句都可省略。一般说来，省略可以使语言简洁、紧凑、重点突出、表达有力。省略的原则是不损害结构或引起歧义。