A) after receiving antibiotics
Amm im not certain but is it not just discovered because its the verb?
Answer:
when he got shoot in the neck
Explanation:
Hadn't been, is the same as "had not been"
inside the sentence, It <em>had not been </em>until the Fourth Dynasty that the most famous pyramids were built, had not been does not fit inside (it doesn't make sense).
Wasn't works, because wasn't is the same as was not
It <em>was not </em>until the Fourth Dynasty that the most famous pyramids were built.
This works as it creates a normal sentence
hope this helps
I don't have the words to comfort you in your sorrow, I know there will be nothing that will try to take away the pain your feeling right now.