He washed his face. He didn't ______ his face.
He did not wash his face .Я это поняла сразу ведь нам учительница говорила что так правильно и по правилам
He washed his face. He didn't __wash____ his face.
He didn't wash his face.
По правилам past simple после did (didn't) пишется глагол в начальной форме(wash).