摘要：464] If the south had won the war, what is now the United States divided into several countries. [译文] 如果南方赢得了战争.现在的美国一定被分成几个国家了. A. will be B. might have been C. should be D. must have been [答案及简析] D. 此句是一个表示与过时事实相反的虚拟语气.

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