问题
单项选择题
We（）our breakfast when the pilot came on board.
A.just have had
B.just had
C.have just had
D.had just had
答案
参考答案：D
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We（）our breakfast when the pilot came on board.
A.just have had
B.just had
C.have just had
D.had just had
参考答案：D
