题目内容

A had been; have seen
B have been; have seen
C had been; had seen
D have been; had seen

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A was wrote
B writes
C has writing
D is written

A it
B its
C that
D those

请简答电信服务用语的基本原则

施工完毕，挪动物品应（)，必须用（)、（)为客户清理现场，确保现场整洁、干净。