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

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/04 16:45:01

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

C过去完成时被动态.

C
被动语态。