Question

It might be __________ hour or more before the guests arrive.

A.
a

B.
an

Answer 1

@_quay_ You posted in wrong section but it's alright as you're new here. Please post your next question in English Group.
http://openstudy.com/study#/groups/english

Answer 2

Use of Vowels..

"An" always comes before the words starting with Vowels..

Answer 3

And we always use an with vowels,like a,e,i,o,u as hour is pronounced as *our*,we will use an. :)

Answer 4

so its a

Answer 5

B..

Answer 6

thank you , if i had a medal i would give one

Answer 7

i do