)write questions using the passive 1.ask about pizza(how/make)-…. 2.ask about australia(when/discover)-…. 3.ask about silver(what/use for)-… 4.ask about television(when/invent)-…

1. How is pizza made?

2. When was Austraia discovered?

3. What is silver used for?

4. When was television invented?

1/How is pizza made?

2 When was Australia discovered?

3 What is silver used for?

4 When was TV invented?