They are having debate about whether the two countries were at war at the time. A. the;

They are having debate about whether the two countries were at war at the time.
A. the; the
B. a; the
C. the; 不填
D. a; 不填

A. the; theB. a; theC. the; 不填(答案→)D. a; 不填解析：句意：他们正在进行一场辩论，在那个时候，这两个国家是否在交战。第一个空，泛指“一次辩论”，故用不定冠词a；第二个空，be at war是固定用法，意思是交战，选D。

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