Final answer:
The subject of this question is English and the grade level is High School.
Step-by-step explanation:
The subject of this question is English and the grade level is High School.
The question is asking about the definition of the subject of the sentence 'A typhoon was coming, so it was a windy day.' In this sentence, the subject is 'typhoon'. The word 'coming' is a verb, not the subject. It describes the action of the typhoon approaching or getting closer.
So, in summary, the subject of the sentence is 'typhoon' and the verb 'coming' describes the action of the typhoon approaching or getting closer.