invertors have changed the way we live.so they are famous for the great thin

来源：学生作业学帮网编辑：学帮网时间：2024/05/08 08:05:51

原题是一道选择题,如下：
Inventors have changed the way we live.
So they are famous for the great things they___.
A.do B.did C.are doing D.had done
前一句用的是现在完成时,所以后面就一定用过去时态
答应应该选择B.did