The author of the report is well _____ with the problems in the hospital because he has been working there for many years. A. acquainted B. informed C. known D. advised
With the change of the economic foundation the entire immense superstructure is _____ rapidly transformed. A. anything but B. more or less C. at large D. any more
I really don’t know for certain____ they discussed.this important event very secretly. A. where was it that B. where it was that C. where that D. it was where that