Question

Найдите одну ошибку в предложении: He is postman, so he has breakfast at 4 a.m. I come to school by the bus.

Answer 1

 He is a (обязательное нужен артикль) postman, so he has breakfast at 4 a.m. I come to school by the  - а здесь артикль не нужен bus.

Answer 2

he is a postman-  пропущен артикль