分词的完成被动式做状语

1.（）many times, he couldn't understand it.
2.（）many times, he still couldn't understand it.
A. having been told
B. having told
C. he had been told
D. though he had been told

1选D，2选A

我想问一下，2可以选D吗？
2选A，分词的完成被动式做状语，做什么状语？

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