______ has recently been done to improve the conditions of elementary schools, a great number of children are unable to go to school.
—How is the boy? —Sorry.He__________though the doctor made every effort to save him.
I should very much like to have gone to that party of theirs,but__________.
—Did you meet the pianist at the station? —No,he__________by the time I__________there.
Did you tell me that there__________an English test the next week?
—What else did you do this morning besides doing the shopping? —Two hours__________washing the windows and the floor.