国家开放大学 / 综合英语(3)
正确率:100%
When it was all over, both men spoke as if there _ _ _ _ _ _ _ a serious problem.
A.hadn’t been
B.isn’t
C.haven’t been
D.wasn’t
A.hadn’t been
B.isn’t
C.haven’t been
D.wasn’t
参考答案:
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