The old lady had two clever sons, ____ did a good job in the 2010 National College Entrance Exam, though.
Nothing shall _______ me _________ from accomplishing my purpose.
There was ______ time ______ I hated to go to school.
We ______ ; we followed the boss into the hall as his guests. How lucky we were!
It’s just _____among countries to host the Olympics as to win an Olympic Medal.
Do ____ you think is right, ____ difficulties you may have.