after graduation,louis ____ in a bank for 8 years and recently promoted

after graduation,louis ____ in a bank for 8 years and recently promoted

题目
after graduation,louis ____ in a bank for 8 years and recently promoted
A has been working
B had been working
为什么答案是B啊,他被提升虽然是过去时,但他不也是一直在银行工作到现在吗?
答案
举一反三
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想找英语初三上学期的首字母填空练习……
英语翻译
1,人们染上烟瘾,最终因吸烟使自己丧命.
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