It's planned to be done tomorrow.还是 it's planned to do tomorrow.主动句为we planned to do it tomorrow.

It's planned to be done tomorrow.还是 it's planned to do tomorrow.
主动句为we planned to do it tomorrow.

应该是一楼的对,因为它是过去时的,而且被动语态体现在前半句了,后半句的被动是多余的.

It's planned to be done tomorrow

是 It was planned to do (by us)tomorrow.