IT WAS NOT UNTIL ALL THE TICKETS WERE SOLD THAT THE CONCERT STARTE...

14. - KIEM TRA 15'' UNIT 13
KIEM TRA 15'' UNIT 13
14. It was not until all the tickets were sold that the concert started.a. The concert didn’t start until all the tickets were sold.b. The concert started until all the tickets were sold.c. The concert didn’t start until all the tickets are sold.d. The concert didn’t started until all the tickets were sold.A, an, the or no articles?