日本品牌音响:把下列句子变为被动语态或主动语态

来源:百度文库 编辑:高校问答 时间:2024/04/28 10:10:50
把下列句子变为被动语态或主动语态
Wisitors have been asked to keep the woods clean and tidy.

Litter baskets have been placed under the trees.

People still throw their ribbish ever where.

I counted seven old cars and three old refrigerators.

Among the rubbish,I found a sign.