-Why is you rprofessor so happy recently?-Because the throry she insisted on__________correct.A is proved B proving C was proved D has proved
You may depend _________it won’t happen again.
He often keeps English _______ ___________,
— Did you scold him for his mistake? — Yes, but _____ it.
It will be five years ____ we meet again.
He said, “_____ a long way to school. ______ a long way to go yet before we arrive.”