问题
选择题
. 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
答案
答案：B
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