YOU SAID:
My dog has eaten my biology homework while is was in the bathroom.
INTO JAPANESE
私の犬はトイレにいた間に私の生物学の宿題を食べました。
BACK INTO ENGLISH
My dog ate my biological homework while I was in the toilet.
INTO JAPANESE
私の犬は私がトイレにいる間、私の生物学的な宿題を食べました。
BACK INTO ENGLISH
My dog ate my biological homework while I was in the toilet.
That didn't even make that much sense in English.