When I was young, my father taught me that the earth ______ around the sun.
Don’t lose heart._______you fail.
--- How are getting on with your English study? ----_________.
You ________ tell anybody else about it; this is a secret between us.
It is the first time that I_____ the night face to face.A. have seen B.had seen C saw. D.see
French is also ____ useful language with a long history .