Write questions using the passive. Some are present and some are past. 1 Ask about glass. (how / make?) How is glass made?
2 Ask about television (when / invent?)
3 Ask about mountains. (how / form?)
4 Ask about antibiotics. (when / discover?)
5 Ask about silver. (what / use for?)​

maksimsavelev1 maksimsavelev1    1   14.02.2021 11:49    20

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svetabruhan svetabruhan  14.02.2021 11:50

1. When was television invented?

3. How are mountains formed?

4. When were antibiotics discovered?

5. What is silver used for?

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