Question

Janet has been in this large company for more than twelve years，___________ as a salesmanager．

A.work
B.working
C.worked
D.to have worked

Answer 1

【答案】：B
考查非谓语动词。由句子结构看，空格前句子成分完整，故空格后只能是从句或者用非谓语形式作状语。而由填入动词work与句子主语Janet的关系来看，Janet无疑是work这一动作的发出者，故应用表主动的现在分词。结合这两个方面即可知选[B]。