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  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?