A. Never use words like I, I’ll, we or you in an essay unless you are asked to write in the first person.
b. Do
Auxiliary verbs form the mood or tense of the other verbs in the sentence. There are three primary auxiliary verbs in the English language and these are: be, have and do.
Answer:
It wasn't very expensive is the correct answer
Explain more please, this isn't enough for us to know the awnser.