Three minutes earlier we could have caught the early train to Philadelphia.
A. or
B. but
C. and
D. so
网友回答
A. or
B. but
(答案→)C. and
D. so
解析:考查固定句型:本题中名词短语相当于祈使句的省略句,句型是:名词+and简单句,题干可换成“条件句+陈述句”结构,即If we had set out three minutes earlier,we could have caught the early train to Philadelphia.句意:再早3分钟,我们就能赶上去费城的早班车了。选C。