to somebody，a British person often shakes hands with the stranger.
A. Introducing
B. To introduce
C. To be int．roduced
D. On being introduced。
网友回答
A. Introducing
B. To introduce
C. To be int．roduced
(答案→)D. On being introduced。
解析：考查固定句型。On doing意为“一......就......”。句意“一被介绍给一个人，一个英国人常会和这个陌生人握手。”a British person和introduce是动宾关系，故用被动。故选D。