4 Written questions
3 Multiple choice questions
- A set of steel girders fastened together and supported the _________ of the tall buildings.
- The stone was not cheap and this ________ of building used a large amount of cut stone.
- The main purpose of steam powered elevators was to move ________ from one factory floor to another.
3 True/False questions
cathedrals → The stone was not cheap and this ________ of building used a large amount of cut stone.
convey → His invention kept accidents from happening if a rope or wire ________ broke.
cable → Otis's invention could be used to ________ people safely to the upper floors of very tall buildings.