He expressed his gratitude to his head teacher, without _______-help he wouldn’t have made such great progress in his studies.
Would you like there ______ a meeting to discuss the matter?
This middle school is ______ to a teachers' college.
______ good, this kind of fruit ______ very well in our city.
Mary’s being hurt ______ the uncertainty of our winning in the game.
______ to give up smoking, he threw away his ______ cigarettes.