Mother always complains that children _______ their shoes very quickly.
---____ was it _____they discovered the entrance to the underground palace?--- Totally by chance.
It is only 6.7% of Korean students _____ have ever read Chinese books or watch Chinese TV programs.
I can’t remember ______ I met the man.
It is the film _______ director is Steven Spielberg _______ attracts quite a few viewers throughout the world.
——Where did you get to know her?-----It was on the farm______ we worked