6.It_______this way A .is had to do B .is had to be done C .had to be done D .has to doRT.选什么?thanks请说明原因

分类: 作业答案 • 2022-02-18 19:19:30

问题描述：

6.It_______this way A .is had to do B .is had to be done C .had to be done D .has to do
RT.选什么?thanks
请说明原因

答