---- What's happening in the new area?
---- New houses recently over there.
A. are built
B. built
C. have been built
D. have built
网友回答
A. are built
B. built
(答案→)C. have been built
D. have built
解析：考察时态和语态。本题的关键在于时间状语recently近来；该词要和现在完成时连用，句意：在新的地区里发生什么事情了？最近在努力很多新的大楼已经被建了起来。根据句意说明使用被动语态的形式。故C正确。