33.A number of high buildings have arisen there was nothing a year ago but rums.
A
when
B
where
C
before
D
until
空后部分是地点状语从句，空格处应填入表示地点的词引导从句，且在从句中作地点状语。句意：大量建筑物在一年前全是废墟的地方拔地而起。故选B。