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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1835

It is hard to say what kind of person he is. Sometimes he is very friendly; at other times he ___ be very cold.

A.can B.must C.will D.shall
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Itishardtosaywhatkindofpersonh