The reason for his success is ______ he worked very hard.
Mr Ascot, headmaster of the school, refused to accept ______of the three suggestions made by the Students’ Union.
If you can dream _____ , you can do _____.
——Your coffee smells great!——It’s from Mexico. Would you like ____ ?
The best job is _____which uses your skill in doing something together with your interest in the subject.
——There must be a dozen pens in this house but I can never find one when I need one.——Keep looking. ____ is sure to turn up.