把句子改为被动语态1Tourists from all over the world visit Venice.2 Trained artists make many of the carnival masks.3 Rich people gave parties every day for a month.
问题描述：
把句子改为被动语态
1Tourists from all over the world visit Venice.
2 Trained artists make many of the carnival masks.
3 Rich people gave parties every day for a month.
答
Venice are visited by tourists from all over the world visit
Many of he carnival masks are made by trained artists
Parties were gave by rich people every day for a month.