affirmative: I did morning exercises.
negative: I did not do morning exercises.
question: Did I do morning exercises?

affirmative: He worked at a factory.
negative: He did not work at a factory.
question: Did he work at a factory?

affirmative: She slept after dinner.
negative: She did not sleep after dinner.
question: Did she sleep after dinner?

affirmative: We worked part-time.
negative: We did not work part-time.
question: Did we work part-time?

affirmative: They drank tea every day.
negative: They did not drink tea every day.
question: Did they drink tea every day?

affirmative: Mike was a student.
negative: Mike was not a student.
question: Was Mike a student?

affirmative: Helen had a car.
negative: Helen did not have a car.
question: Did Helen have a car?

affirmative: You were a good friend.
negative: You were not a good friend.
question: Were you a good friend?

affirmative: You were good friends.
negative: You were not good friends.
question: Were you good friends?

affirmative: It was difficult to remember everything.
negative: It was not difficult to remember everything.
question: Was it difficult to remember everything?