. I first met Mr Zhao nine years ago. He ____ at a chemical college at that time.
| A．had worked | B．has worked | C．was working | D．had been working |
相关知识点
推荐试卷
. I first met Mr Zhao nine years ago. He ____ at a chemical college at that time.
| A．had worked | B．has worked | C．was working | D．had been working |
试题篮
()
粤公网安备 44130202000953号
