问题

. 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
B:has worked
C:was working
D:had been working
正确答案是:
同类题型
Would you like some bread— ________. I’m full.
I would have dropped in on him, but I ____ his address
would __________it if you would let me deal with this by myself.
I’m sure you know the difference _____”look for” and “find”.
You aren’t a stranger, are you——,don’t you rememberme atthe school gate ten minutes ago