高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
The goods ＿＿＿＿ when the director returned.
A.were checking
B.were checked
C.had been checked
D.had checked
The goods ＿＿＿＿ when the director returned.
A.were checking
B.were checked
C.had been checked
D.had checked
参考答案：
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