单选题
We ______ our breakfast when an old man came to the door.
A、
just have had
B、
had just had
C、
just had
D、
have just had
【正确答案】
B
【答案解析】
[解析] “吃饭”这一动作发生在came to之前。从句的谓语用的是一般过去式,所以主句应用过去完成时,表示“过去的过去”。故选B。
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