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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1598

The old lady was so pleased with all ______ we had done for her ______ she wrote us a thank-you letter.

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