___there many times,she knew where to find the chief engineer's office.A Being B Having been C ...___there many times,she knew where to find the chief engineer's office.A Being B Having been C Had been D To be

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___there many times,she knew where to find the chief engineer's office.A Being B Having been C ...___there many times,she knew where to find the chief engineer's office.A Being B Having been C Had been D To be
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___there many times,she knew where to find the chief engineer's office.A Being B Having been C ...___there many times,she knew where to find the chief engineer's office.A Being B Having been C Had been D To be
___there many times,she knew where to find the chief engineer's office.A Being B Having been C ...
___there many times,she knew where to find the chief engineer's office.A Being B Having been C Had been D To be

___there many times,she knew where to find the chief engineer's office.A Being B Having been C ...___there many times,she knew where to find the chief engineer's office.A Being B Having been C Had been D To be
B Having been 这是分词短语做状语.因为发生在knew动作之前,故用完成时

b

B Having been

因为原句应该是there have been many times。。。而把have been 置于句首,自然就该用Having been 了