Part 1

Change sentences in the active voice to the passive voice. Change sentences in the passive voice to the active voice.

1		Technology is changing our lives.
2		Millions of documents are sent by fax machines every day.
3		The Internet connects people around the world.
4		Many people own cellular phones.
5		Phone messages are taken by answering machines.
6		Marconi developed the first radio.
7		Many sales calls are made by computers.
8		Cave dwellers painted the walls of caves more than 20,000 years ago.
9		The telegraph was invented by the American Samuel Morse in the 1830s.
10		The United States Army developed the Internet.