作业帮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
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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
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
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
C过去完成时被动态.
C
被动语态。