非谓语动词,求详解The children were not _______ for the accident.A.blamed B.to be blamed C.being blamed D.to blame为什么选D,为什么不选B,求详解.

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非谓语动词,求详解The children were not _______ for the accident.A.blamed B.to be blamed C.being blamed D.to blame为什么选D,为什么不选B,求详解.

非谓语动词,求详解The children were not _______ for the accident.A.blamed B.to be blamed C.being blamed D.to blame为什么选D,为什么不选B,求详解.
非谓语动词,求详解
The children were not _______ for the accident.
A.blamed B.to be blamed C.being blamed D.to blame
为什么选D,为什么不选B,求详解.

非谓语动词,求详解The children were not _______ for the accident.A.blamed B.to be blamed C.being blamed D.to blame为什么选D,为什么不选B,求详解.
be to blame 是一个固定短语,表示“……为……负责”