.. Once fighting between the two villages and many people were killed.A. broke outB. was

问题补充：

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. Once fighting between the two villages and many people were killed.

A. broke out

B. was broken out

C. had broken out

D. had been broken out

答案：

(答案→)A. broke out

B. was broken out

C. had broken out

D. had been broken out

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