问题补充:
单选题Alloftheguests___________by9o’clock,butthehost_____________until15minuteslater.A.arrived; didn’t turn upB.had arrived; didn’t turn upC.arrived; hadn’t turned upD.had arrived; hadn’t turned up
答案:
B解析本题对过去发生的动作的陈述,客人的到来发生在主人的到来之前。故选B
时间:2020-01-03 19:21:38
单选题Alloftheguests___________by9o’clock,butthehost_____________until15minuteslater.A.arrived; didn’t turn upB.had arrived; didn’t turn upC.arrived; hadn’t turned upD.had arrived; hadn’t turned up
B解析本题对过去发生的动作的陈述,客人的到来发生在主人的到来之前。故选B