转换为被动语态
问题描述：
转换为被动语态
1.Leonardo didn't painted the Mona lisa.
2.Picasso didn't paint the Mona Lisa.
3.Thousanda of workers built the Great Wall of China.
答
第一句有问题吧?
The Mona Lisa wasn't painted by Picasso.
The Great Wall of China was built by thousands of workers.
第三个句子前面应该是thousands