4 Written questions
3 Multiple choice questions
- His invention kept accidents from happening if a rope or wire ________ broke.
- Elisha Otis invented a ________ that kept the cages from crashing to the ground.
- This is the way the great __________ of Europe were built hundreds of years ago.
3 True/False questions
shaft → These fitted into slots running the length of the elevator ______, keeping the cage from falling any further.
structure → A set of steel girders fastened together and supported the _________ of the tall buildings.
rods → The stone was not cheap and this ________ of building used a large amount of cut stone.