It’s quite common in Britain to say “Thank you” to the drivers people get off the bus.A. a

问题补充：

It’s quite common in Britain to say “Thank you” to the drivers people

get off the bus.

A. after

B. since

C. until

D. when

答案：

A. after

B. since

C. until

(答案→)D. when

解析：本题的含义是在英国，但人们下车的时候对司机说谢谢是相当普遍的，when引导时间状语从句，翻译成当……时候，符合本题的含义，故本题选D。