把下面句子变成变动语态。
1. We use the computer to search for information.
    The computer _____ _____ to search for information.
2. We used the computer for playing games.
    The computer _____ _____ for playing games.
3. Jackson designs this CD-ROM.
    This CD-ROM _____ _____ by Jackson.
4. We call it printer.
    It _____ _____ printer.
5. They learn English on the radio.
    English _____ _____ on the radio.