变为被动语态：We wash our clothes once a week.
问题描述：
变为被动语态：We wash our clothes once a week.
答
Clothes are washed once a week by us.
答
Our clothes are washed by us once a week
答
Our clothes are washed by us once a week.
答
clothes are washde by us once a week.
答
The clothes are washed by us once a week