问题
选择题
Over the past few years the cost of living _______________considerably.
A．has been raised
B．has risen
C．was raising
D．was rising
答案
答案：B
题目分析：考查时态和动词。Raise及物动词提高；rise不及物动词上升。本题的时间状语Over the past few year常与现在完成时连用；
点评：时态的考查要根据上下文的语境和句子的关键词，本题就是根据Over the past few years选定使用现在完成时。