a
本质是省略了大量的从句结构，完整表达是the fire was reported that it had been controlled.

c明显不对，to和时态胡乱搭配



【 在 budaha 的大作中提到: 】
:
: the fire was reported ( ) 1. controlled 2.to be controlled 3.to have be
: en controlled
:

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