It took me a long time before…——2010 高考英语第 23 题答案解析

2010_北京卷 (英语)

2010 北京 第 23 题 单选题 区分题
2010_北京卷 (英语)

$28. It took me a long time before I was able to fully appreciate what they __ for me.$

A. had done
B. did
C. would do
D. were doing
参考答案

A

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