问题补充:
My hometown a lot in the past ten years.
A. change
B. changed
C. has changed
D. is changing
答案:
A. change
B. changed
(答案→)C. has changed
D. is changing
解析:现在完成时用来表示之前已发生或完成的动作或状态,其结果的确和现在有联系。动作或状态发生在过去但它的影响现在还存在;也可表示持续到现在的动作或状态。其构成: have (has) +过去分词。根据语境可知此句的含义是我的家乡近十年发生了很多的变化,因主语是my hometown是单数,故用助动词has+过去分词,故选C.