when the rescue workers arrived.they were sad to see what ()of the relics after the big fire .A was remainedB remainedC was made Dmade答案是B为什么不能选A

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when the rescue workers arrived.they were sad to see what ()of the relics after the big fire .
A was remained
B remained
C was made
Dmade
答案是B为什么不能选A

remain 是不及物动词 不能用被动语态 只有一般现在时 和 一般过去 和 ing 形式