________ in the company for three years, Mark has become experienced in business negotiations.
举一反三
- _____ in the company for three years, Mark has become experienced in business negotiations. A: Having worked B: Having been working C: Have worked D: Worked
- 中国大学MOOC: ______in the company for eight years, Tim has become experienced in business negotiations.
- ________ in the company for three years, Kevin has become experienced in foreign trade. A: Having worked B: Have been working C: Have worked D: Worked
- He _______ a league member for three years A: is B: has been C: has become D: have become
- ____________ for more than 20 years, Chinese tourism has become the dragon business of the third industry of our country.