______ to somebody, a British person often shakes hands with the stranger.
A. Introducing B. To introduce C. To be introduced D. On being introduced
______ to somebody, a British person often shakes hands with the stranger.
A. Introducing B. To introduce C. To be introduced D. On being introduced
D
很明显，句中的空白处应选用非谓语动词的被动形式。介词on后带被动态的动名词表“一……就……，在……的时候”。如果将C项填入空白处，虽然这个不定式是被动形式，但不定式短语处于句首时通常充当目的状语。