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  • 科目:英语
  • 题型:单选题
  • 难度:较易
  • 人气:1762

I often have conversations with John over ______ telephone, while keep in touch with Tom by ______ letter.

A.不填;the B.不填;a
C.the;不填 D.the; a
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IoftenhaveconversationswithJoh