______ has recently been done to provide more buses for the people, a shortage of public vehicles remains a serious problem.
A.That
B.What
C.In spite of what
D.Though what
网友回答
C解析语意为尽管最近已经采取了许多措施给人们提供更多的公交车，但公交车辆的缺乏仍是个严峻的问题。what引导的是名词性从句，相当于名词或名词性短语，不可放在though后，但可放在in spite of后。