YOU SAID:
My sister put my cat in the microwave
INTO JAPANESE
私の妹は私の猫を電子レンジに入れた
BACK INTO ENGLISH
My sister put my cat in the microwave.
INTO JAPANESE
姉は私の猫を電子レンジに入れました。
BACK INTO ENGLISH
My sister put my cat in the microwave.
You've done this before, haven't you.