单选1道(our neighbour has)

问题描述:

单选1道(our neighbour has)
Our neighbour has _______ ours.
a as a big house as
b as big a house as
c the same big house as
d a house the same big as
选什么?为什么?

b
Our neighbour has a house as big as ours.
Our neighbour has as big a house as ours.