【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.reducedB.being reducedC.to reduceD.reducing
在线课程【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。