YOU SAID:

my dad never came back from getting milk?

INTO JAPANESE

私の父は牛乳を飲んで帰ってこなかったの？

BACK INTO ENGLISH

My father did not come home with drinking milk?

INTO JAPANESE

私の父は牛乳を飲みながら帰宅しませんでしたか？

BACK INTO ENGLISH

Did my father not come home while drinking milk?

INTO JAPANESE

私の父は牛乳を飲みながら帰宅しませんでしたか？

BACK INTO ENGLISH

Did my father not come home while drinking milk?