问题描述:
将下列句子改为被动语态.We must water the flowers. People cut down a lot of trees every year.
He cleaned his bedroom just now.
The teacher won't open the window.
Mary has forgotten the book.
He cleaned his bedroom just now.
The teacher won't open the window.
Mary has forgotten the book.
问题解答:
我来补答展开全文阅读