He was a good student and scored _________ average in most subjects.
_________ they were here now, we would be able to celebrate their wedding anniversary.
Mr. Li, a man calling himself Smith wants to see you. ________ he come in?
In many countries, government reports, legal papers and most business letters are the main situations _______ English is used.
Rather than ______ that film, I would ______ at home.
The situation is _________—we have no food, very little water and no medical supplies.