YOU SAID:

Got the cat in the bag

INTO JAPANESE

鞄の中に猫が入ってた

BACK INTO ENGLISH

I had a cat in my bag

INTO JAPANESE

カバンの中に猫がいました

BACK INTO ENGLISH

there was a cat in the bag

INTO JAPANESE

鞄の中に猫が入っていました

BACK INTO ENGLISH

there was a cat in the bag