___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
问题描述：
___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
答
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
答
B Having been
答
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
答
b