Question

【题目】They have ________ since the factory opened.

A. left the school B. joined the team

C. become workers D. worked here

Answer 1

【答案】D

【解析】

试题分析：句意：自工厂开业他们就在这里工作。根据since the factory opened可知该用现在完成时态，而且谓语动词必须是延续性动词，所以选D。