The visit of the police was not connected ____ the lost child.
Many experts hold the view _____ teacher development is ____ the key to better education lies.
_____ that he has no qualifications in business management, Ken plans to gain the necessary skills by taking a part-time course.
The river _____ banks used to be covered with fruit trees and flowers is now seriously polluted.
--How did you do in the test?--Not so well. I ____ much better but I misread the directions for Writing.