过去完成时改被动语态We had cleaned our classroom by Tuesday .要怎么改成被动语态?（要含有by us 和by Tuesday ）
问题描述：
过去完成时改被动语态
We had cleaned our classroom by Tuesday .
要怎么改成被动语态?
（要含有by us 和by Tuesday ）
答
Our classroom had been cleaned by us by Tuesday.
答
The classroom was cleaned by us by Tuesday.