Question

the cat gingerly receives it. ( change the voice)

Answer 1

It was received gingerly by the cat.

Hope it helped you

Answer 2

It was received gingerly by the cat.

This is the voice change as per the instruction.

The cat sometimes watches the mouse whole and looking for an hour or two.

This is changing as per the passive voice and an old women was met by me is also direct sentence.

Active and passive voice changing is a good exercise and students learn easily and do practice a lot.