--Have you got the leaving time of the train for me?---Yes, but you’d better ____of it by yourself.

Careful surveys have indicated that audience ________ teachers and students be more likely to take seats ________ directed. 

As nobody here knows what is wrong with the machine, we must send for an engineer to _________ the problem.

He felt______ duty to work for human rights and progress.

Egyptian President decided to ______on Friday afternoon after an 18-day campaign against him, ending his thirty-year rule.