YOU SAID:
I have to do my homework but my mom took my phone.
INTO JAPANESE
私は宿題をしなければならないが、母は私の携帯電話を取った。
BACK INTO ENGLISH
I have to do my homework, but my mother took my cell phone.
INTO JAPANESE
私は宿題をしなければならないが、母は私の携帯電話を取った。
BACK INTO ENGLISH
I have to do my homework, but my mother took my cell phone.
You've done this before, haven't you.