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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 186

He __________ that until he __________ the directions once again.

A.didn't understand ; had read
B.hadn't understood ; read
C.understood ;had read
D.understood ; read
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Hethatuntilhethedirectionsonce