下列各句中，加点的成语使用恰当的一句是(　　)

May I have a rest I have alreadyfinished ______ the report.

__ brushing my teeth twice a day.

and fresh, this kind of food is so popularwith local people and the tourists

There is no doubt ______ international cooperation is key to ______ with cybercrime, as Vinton Cerf has said that the problem of cybercrime is _______ huge that it requires UN to form a special agency to act as an international referee or steward.