问题
选择题
The waiting lists for a bed in a public elderly care home in Beijing have grown ________ long that some are saying it could take 100 years to get a position.
A．very
B．too
C．quite
D．so
答案
答案：D
句意：在北京等待公共养老院床位的名单很长以至于一些人说可能需要100年才能得到一个位置。so...that...是固定句型，表示“如此……以至于……”，符合句意。