YOU SAID:
Ill do my homework in 15 minutes, I guess
INTO JAPANESE
15分で宿題をしますね
BACK INTO ENGLISH
I'll do my homework in 15 minutes
INTO JAPANESE
15分で宿題をします
BACK INTO ENGLISH
Do your homework in 15 minutes
INTO JAPANESE
15分で宿題をしなさい
BACK INTO ENGLISH
Do your homework in 15 minutes
That didn't even make that much sense in English.