Only ticket-holders were __________ to the stadium for the concert given by Jay Chou, so many of his fans were turned away.
It is not who is right but what is right is of importance.
You must watch carefully everything _____ the teacher does in class.
She didn't come to his birthday party just_____ what he had said to her the day before.
Drivers are warned that it is dangerous to talk on the phone while________.
The Great Wall is _________________ tourist attraction that millions of people pour in every year.