【题目】The 1920s ushered in the era of the motor car, thus greatly ______ the amount of time it took people to travel to work.
A.reduced B.being reduced C.to reduce D.reducing
【答案】D
【解析】
考查非谓语动词。句意:20世纪20年代迎来了汽车时代,从而大大缩短了人们上下班的时间。分析句子结构可知reduce在句中作非谓语动词,且表自然而然的结果应用现在分词reducing。故选D。