问题补充:
. 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
答案:
A. had worked
B. has worked
(答案→)C. was working
D. had been working
解析:可联系答.案.网客服索取。
时间:2021-03-13 18:01:05
. 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
A. had worked
B. has worked
(答案→)C. was working
D. had been working
解析:可联系答.案.网客服索取。