YOU SAID:

the cat was put in the box where is it now

INTO JAPANESE

猫は今どこにある箱に入れられました

BACK INTO ENGLISH

The cat was now put in a box where it is

INTO JAPANESE

猫は今、それがある箱に入れられました

BACK INTO ENGLISH

The cat has now been put in a box where it is

INTO JAPANESE

猫は今、それがある箱に入れられました

BACK INTO ENGLISH

The cat has now been put in a box where it is