—Recent pressure at work may ______ his behavior.
We are only___ glad to do anything we can ___ her.
Only ticket-holders were _______ to the stadium for the concert given by Jay Chou, so many of his fans were turned away.
The leader is losing ground as the rest of the runners _____
---I have _______ to apologize for the slight damage to your recorder. --- Never mind.
-----What _____?-----I______my key and can't open the door.