问题补充:
Renshou_ a lot in the last 3 years. It’s now one of the most important cities in Meishan.
A. changed
B. changes
C. has changed
D. had changed
答案:
A. changed
B. changes
(答案→)C. has changed
D. had changed
解析:句意:仁寿在过去的三年里已经有了很大改变。在梅山它是最重要的城市之一。分析:通过句意体现为现在完成时,现在完成时的构成:have/has+done(动词过去分词), 主语是单数,因此用has.故选 C