The purpose of the article is to draw public attention _________ the problem.
Only when you are in poor health_______ realize that health is _______.
Some of you may have finished unit one. _______, you can go on to unit two.
Her daughter was so lovely _____ little girl that everybody in the street would smile at her at ____ first sight.
Please remind me _______ he said he was going. I may be in time to see him off.
He arranged ____ a man to meet his uncle at the station because he was busy with work.