(单选题)

Housing prices since a few years ago. Therefore, it’s time the central government some effective measures to bring them under control.

A.have increased; would take

B.have been increasing; took

C.have been increasing; takes

D.have increased; will take

参考答案：B

参考解析：

考查现在完成进行时和It is（high）time that…句型中的虚拟语气。句意：自几年前以来，房价一直在上涨。因此，现在是中央政府采取有效措施控制房价的时候了。根据时间状语since a few years ago，可知用完成时，又因为房价还会继续涨，所以用完成进行时，后空it’s time+句子，从句需用虚拟语气，后面的从句谓语动词用过去式或should+动词原形。故选B。

知识点：

Housing prices ______ since a few years ago. Therefore, it’s time the central government ______ some effective measures to bring them under control.

Housing prices since a few years ago. Therefore, it’s time the central government some effective measures to bring them under control.