When leaves for work in the morning, he makes sure to pack his thermos.

what noun or pronoun should be placed in the blank?

students

frank

they

i

It would be Frank because if you use the word "students", it wouldn't be logical because they aren't supposed to work yet and they aren't specifically identified as a male. ("They" also don't specifically identify as a male.) If you use the word "I" it also wouldn't make sense because it includes third person action.

I think Frank because the word he allows me to recognize 3rd person . In 3rd person, a narrator is narrating what the main character is doing, occasionally putting in the main character's name without using I. Students would also not make sense because it is a plural, and not a person's name. So Frank is the answer.

Isaw that onlinemade me laugh