???Which of these sentences is incorrect? =She visited her grandmother last weekend. =I didn't went to the store yesterday. =They watched a movie last night. =We cleaned our room yesterday.

Чтобы определить некорректное предложение, следует обратить внимание на правильное использование временных форм глаголов.

Некорректное предложение: I didn't went to the store yesterday.

Правильный вариант: I didn't go to the store yesterday.

Ответ: =I didn't went to the store yesterday.