Yes-No Simple-Past-Tense Questions
Did he become very happy? (What is the subject? What is the verb?)
Yes, he did become very happy. (Subject = he, Verb = did become)
Did he throw the frisbee? (what is the subject? What is the verb?)
Yes, he did throw the frisbee. (Subject = He, Verb = threw)
Did they eat watermelon at snack time? (What is the subject? What is the verb?)
Yes, the did eat watermelon at snack time. (Subject = they, Verb = did eat)