Нужно сделать к каждому предложению утверждение, отрицание, вопрос. she (visit) her grandma last sunday
they (go) to the zoo yesterday
she (be) at theatre a year ago

She visited her grandma last sunday/she didn’t visit her grandma last sunday/ did she visit her grandma last sunday?

they went to the zoo yesterday/ they didn’t go to the zoo yesterday/ did they go to the zoo?

she was at theatre a year ago/ she has never been at the theatre/ можно и she wasn’t at theatre a year agoo/ was she at theatre a year ago?

(Утв) She visited grandma last sunday.

(Отриц) She didn't visit grandma last sunday.

(Вопр) Did she visit grandma last sunday?

-

(Утв)They went to the zoo yesterday.

(Отриц) They didn't go to the zoo yesterday.

(Вопр) Did they go to the zoo yesterday?

-

(Утв) She was at theatre a year ago.

(Отриц) She wasn't at theatre a year ago.

(Вопр) Was she at theatre a year ago?

Вывод: Учите английский!