--- Marry is in hospital. --- Oh, really? I _______ know. I _________ go and see her.
. _____________ is a fact that English is accepted as an international language.
. ______is mentioned above, the number of the students in senior schools is increasing.
. . Our neighbor has ____ ours.
. To our pleasure, his parents came to accept the fact ____.
. _______ matters most in learning English is enough practice.