试题详情
- 单项选择题（） in the company for three years, Mark has become experienced in business negotiations. ( 章节：1 难度：2)
A、Having worked
B、Have been working
C、Have worked
D、Worked
- A
关注下方微信公众号，在线模考后查看
热门试题
A、Having worked
B、Have been working
C、Have worked
D、Worked
关注下方微信公众号，在线模考后查看