They will start their project ____at helping the poor children to be educated in China＇s west.

How many times have you found yourself arriving at school to start your day, only ________ that you left your homework at home? 

_____herself wondering whether she had made a mistake, she felt embarrassed and at a loss.

--- It seems that the manager is very unhappy. --- Surely she is. You see, Steve left the company half an hour ago, with his work_______.

The thief spoke in a _____ voice and the little boy was very ____．