what has recently been done to provide more buses for the people a shortage of public ve

问题补充：

what has recently been done to provide more buses for the people, a shortage of public vehicles remains a problem.

A. Except for

B. But for

C. Because of

D. In spite of

答案：

A. Except for

B. But for

C. Because of

(答案→)D. In spite of

解析：短语辨析. A.除了……以外；B.如果没有 C.由于 D.尽管；不顾。句意：尽管最近做的事情为人们提供了更多的公交车，公共交通工具的短缺依然是一个问题。选D。