YOU SAID:
The frog ate the bug in a bag.
INTO JAPANESE
カエルは袋に入れて虫を食べました。
BACK INTO ENGLISH
The frog put it in a bag and ate the bug.
INTO JAPANESE
カエルはそれを袋に入れて虫を食べました。
BACK INTO ENGLISH
The frog put it in a bag and ate the bug.
You've done this before, haven't you.