问题标题:
I_____MrSmithsincehemovedtoShanghaiwithhisfather.A.didn'tfromB.didn'thearfromCwon'thearfromD.haven'theardfrom
问题描述:

I_____MrSmithsincehemovedtoShanghaiwithhisfather.

A.didn'tfromB.didn'thearfromCwon'thearfromD.haven'theardfrom

董育宁回答:
  出现since用完成时态所以选D   hearfrom收到来信接到电话的意思
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