_____________he referred to in his article was unknown to the readers.
It was thirty years _______ he was invested as an outstanding alumnus to celebrate the 128th anniversary of the university.
Frankly speaking, in many countries _______ is called "equality" does not really mean equal rights for all people.
Clearly there is much to be desired _____ it comes to the quality of teachers and their teaching methods.
Don’t let such an unimportant matter as this come between us _____ we can concentrate on the major issue.
Despite the rule _____ mobile phones are forbidden in class, my deskmate can’t help playing phone games occasionally.