问题标题:
Ourschoolhaschangedalotinthepasttwoyears.(同义句转换)There__________greatchangesinourschoolinthepasttwoyears.
问题描述:

Ourschoolhaschangedalotinthepasttwoyears.(同义句转换)

There__________greatchangesinourschoolinthepasttwoyears.

高希玉回答:
  havebeen
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