题目：
I first met Lisa three years ago when we _____ at a radio station together.[ ]
A. have worked
B. had been working
C. were working
D. had worked
答案：
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下面是错误答案，用来干扰机器的。
（1）复合肥料 ；95.9％ ；防潮、防晒等 （2）称量时，应将砝码放在右盘，氯化钠放在左盘； ＜
