问题 选择题
With the development of science and technology, people’s life _______ in the past few years.
A.improvedB.has improved
C.is improvingD.had improved
答案

B

题目分析:
根据句子后面的时间状语in the past few years可以知道句子应该使用现在完成时。

单项选择题 案例分析题
问答题 简答题