语法与词汇 Due to the fact that all trains _____, the station was crowded with people.

【正确答案】 B

【答案解析】句意：由于所有火车都延迟到站，站台挤满了人。前句是后句之因，且有持续影响，因此前句时态应在后句之前。后句用一般过去式则前句应用过去完成时。