составить вопросы, используя пассив
1) ask about the telephone (when/invent)
2) ask about glass (how/make)
3) ask about australia (when/discover)
4) ask about silver (what/use for)
5) ask about television (when/invent)

1) When was the telephone invented?2) When was glass made?3) When was Australia discovered?4) What was silver used for?5) When was television invented?