All of the guests ___________ by 9 o’clock , but the host _____________ until 15 minutes later .
A.arrived; didn’t turn up
B.had arrived; didn’t turn up
C.arrived; hadn’t turned up
D.had arrived; hadn’t turned up
网友回答
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