Complete the detective's case notes about the suspicious twins.
During the interrogation of the twins, I noticed that _________________________ brothers kept nervously looking at the door.
I checked their alibis, but unfortunately for them, _________________________ of them actually bought a cinema ticket that night.
I warned them that _________________________ Arthur or Bartholomew must confess soon, or they are in big trouble.
both brothers
"Both" is used with a plural noun ("brothers") to refer to the two twins together.
neither of them
"Neither of them" means "not Arthur and not Bartholomew." It shows that zero out of the two twins bought a ticket.
either Arthur or Bartholomew
The structure "either... or" is used to present two choices or possibilities, meaning one of the two must take action.