__________ with such great difficulty, Jack felt at a loss__________A.facing; what to sayB.Faced; what to sayC.Having faced; how to tellD.Being faced ; how to speak
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B解析考查非谓语动词。因为face的用法为：sb be faced with sth或facing sth。所以说如果用facing,那么就不能加with,即facing such great difficulty...；what to say说什么，选B。