Active to passive: Why/Where question (wh-word + auxiliary + object + be/past participle)

1. A.
   Why isn’t her son brought to my house?
2. B.
   Why wasn’t her son brought to my house?
3. C.
   Why wasn’t her son brought by her to my house?
4. D.
   Why isn’t her son brought by you to my house?

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1. A.
   Why have the substantial stylistic anomalies been overlooked by the editor?
2. B.
   Why are the substantial stylistic anomalies being overlooked by the editor?
3. C.
   Why did the substantial stylistic anomalies be overlooked by the editor?
4. D.
   Why were the substantial stylistic anomalies overlooked by the editor?

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1. A.
   Where the conference will be held?
2. B.
   Where will the conference be held?
3. C.
   Where is the conference held?
4. D.
   Where has the conference been held?

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