Question

【题目】__________ in her office for nearly 20 hours, she is going home to have a rest.

A. To work

B. Working

C. To have worked

D. Having worked

Answer 1

【答案】D

【解析】考查非谓语动词。句意：在办公室工作了近20小时后，她将回家休息一下。动词work与主语she是主动关系，且先于谓语动词发生，所以用动词-ing形式的完成式having done作状语。