Passive 1 (is done / was done)
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Vocabulary En-Ru

42.2

Write questions using the passive. Some are present and some are past.

  1. Ask about glass. (how / make?)
  2. Ask about television. (when / invent?)
  3. Ask about mountains. (how / form?)
  4. Ask about Pluto (the planet). (when / discover?)
  5. Ask about silver. (what / use for?)