---Doestheriverstillfloodthevillageduringthesummer?  -...

问题详情：

 ---Does the river still flood the village during the summer?

   ---Thanks to the past two years’ river engineering efforts, the impact____.

    A. was reduced                B. has been reduced        C. has reduced         D. is reducing

【回答】

B

知识点：现在完成时及其被动式

题型：选择题