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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 1206

The speaker _____ several other subjects in the course of his talk but mostly kept himself to the main topic.

A.held on B.worked out C.touched on D.kept out of
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Thespeakerseveralothersubjects