摘要：700] I need one more stamp before my collection . [译文] 我再需要一枚邮票就完成了我的集邮册. A. had completed B. completes C. has been completed D. is completed [答案及简析] D 主句是将来时态.时间或条件状语从句中用现在时态. 本资料来源于

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