将下列句子改为被动语态（英语）

题目

将下列句子改为被动语态（英语）
将下列句子改为被动语态：
1.We found some jewels in a box.
2.Thomas Edison invented the light bulb.
3.People use stamps for sending letters.
4.Farmers grow rice in the Sonth of China.
5.He gave me a new dictionary this morning.
6.The boy didn't throw the stone just now.
7.He doesn't operate this machine.

答案

1.The jewels in a box has been found by us.2.The light bulb was invented by Thomas Edison.3.Stamps are used by people for sending letters.4.Rice are grown by farmers in the South of China.5.A new dict...