题目内容
将下面句子变为被动语态，每空一词。
Did they build a bridge here a year ago?
________ a bridge ________ here by them a year ago?
答案：Was,built
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题目内容
将下面句子变为被动语态，每空一词。
Did they build a bridge here a year ago?
________ a bridge ________ here by them a year ago?