1. About _____ of the workers in that steel works are young people.
A. third-fifths B. three-fifths C. three-fives D. three-fifth
2. The reporter said that the UFO ______ from east to west when he saw it.
A was travelling B travelled C had been travelling D was to travel
3.When I was a child, I was often told ____ my hands dirty.
A. don’t get B. not to let C . not to get D. not make
