I don't care where we go ____ we don't have to stand in line.A.in case B.as long as C.as far as D.so that为什么选B?

I don't care where we go ____ we don't have to stand in line.
A.in case B.as long as C.as far as D.so that
为什么选B?

B 只要( A 万一,C 与……一样远,D 以便,为了,这三项与题意不符）

as long as 只要

B.as long as ========so long as 只要．．．