把We must sell allthese goods.they must have lost your letter in the post.改为被动语态.

分类: 作业答案 • 2022-04-13 16:20:20

问题描述：

答

All these goods must be sold.
Your letter must have been lost in the post.

答

All these goods must be sold.
Your letter must have been lost in the post.

答

All these goods must be sold.
Your letter must have been lost in the post.