--Inventors have changed the wong we live.--So they are famous for the great things they___?如题谁会填!有四个选项 A do B did C are doing D had done

问题描述:

--Inventors have changed the wong we live.--So they are famous for the great things they___?如题
谁会填!有四个选项 A do B did C are doing D had done

B