Question

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best
expresses the same sentence in Passive/Active voice.
He had kept up his training regimen for a month.
A) Keeping up the training regimen had been done by him for a month. B) For a month he has had been keeping his training regimen. C) He is training and this has been kept for a month. D) His training regimen had been kept up by him for a month.

Answer 1

Answer:

d ) option is right.

had=had been + third form