把下列句子变为被动语态16.The workers themselvers invented the new machi
把下列句子变为被动语态 16.The workers themselvers invented the new machine. 17.They set up this hospital in 1950. 18.Tom broke the window. 19.Tea grows in Chine. 20.Did you write the letter.
16.The new machine was invented by the workers themselves. 17.This hospital was set up in 1950 by them. 18.The window was broken by Tom. 19.Tea is grown in China. 20.Was the letter written by you?