高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
Because he ＿＿＿ his work well, he was fired.
A.had not been doing
B.have been doing
C.had not being done
D.had not been done
Because he ＿＿＿ his work well, he was fired.
A.had not been doing
B.have been doing
C.had not being done
D.had not been done
参考答案：
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