If you're asking about the word "have", its third person singular form is "has". " Choose " was equally exciting. Everyone was welcome to read it!
The third person singular form of seem is seems. " Choose " was equally exciting. Everyone was welcome to read it!
'ought to' was a modal-verb, and there was no third-person singular. " Choose " was equally exciting. Everyone was welcome to read it!
Yes, the dog was the third person singular. In English, the third person singular included he, she, it, and the singular form of countable pronoun. Dog was a countable pronoun, and the dog referred to a specific dog, so it was a third person singular. When the subject of the sentence was the third person singular form of the dog, the predicative verb in the sentence had to change according to the corresponding rules. For example, in general, add-s directly, add-es directly at the end of s, x, z, sh, ch, or o, and add-es directly at the end of y with a syllable in front of y, change y to i and then add-es, etc.(For example, The dog likes bones.) "Choose" was equally exciting. Everyone was welcome to read it!
The third person singular form of start is 'starts'. " Choose " was equally exciting. Everyone was welcome to read it!
The third person singular form of 'teach' is 'teaches'. " Choose " was equally exciting. Everyone was welcome to read it!
The third person singular of 'hike' was 'hikes'. " Choose " was equally exciting. Everyone was welcome to read it!
The third person singular form of wave is waves. " Choose " was equally exciting. Everyone was welcome to read it!
The third person singular form of 'carry' is 'carry'. " Choose " was equally exciting. Everyone was welcome to read it!
The third person singular form of 'observe' is 'observes'. " Choose " was equally exciting. Everyone was welcome to read it!
The third person singular form of 'laugh' is 'laughs'. " Choose " was equally exciting. Everyone was welcome to read it!