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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 容易
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He was so pleased with all ______ we had done for him _____ he wrote us a letter to praise us for it.

A.what; what B.what; that C.that; what D.that; that
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Hewassopleasedwithallwehaddone