In the following sentences:

나와 내친구들은 치맥을 사랑해요!

그래서 지난주에 대구 치맥 페스티벌에 다녀왔어요.

사람들이 정말 많았어요. 치킨도 정말 많았고요.

(Source: 연세한국어 듣기와 읽기 2 - p.40)

According to my dictionary, there is an entry in 고 that means the following:

Used at the end of a sentence, to express a question

However, all the examples use the interrogative tense.

남은 일은 누가 하고?

저녁밥은 누가 짓고?

So I'm not sure if it is correct. It also does not make sense in the context.

So what does 고 mean in the sentence and why is it used after all?