4 Written Questions
3 Multiple Choice Questions
- His invention kept accidents from happening if a rope or wire ________ broke.
- The stone was not cheap and this ________ of building used a large amount of cut stone.
- These fitted into slots running the length of the elevator ______, keeping the cage from falling any further.
3 True/False Questions
structure → A set of steel girders fastened together and supported the _________ of the tall buildings.
device → Elisha Otis invented a ________ that kept the cages from crashing to the ground.
convey → His invention kept accidents from happening if a rope or wire ________ broke.