We our breakfast when an old man came to the door.A. just have hadB. have just hadC. just

问题补充：

We our breakfast when an old man came to the door.

A. just have had

B. have just had

C. just had

D. had just had

答案：

A. just have had

B. have just had

C. just had

(答案→)D. had just had

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