Grandpa is old, but he is still very ____.
The 2010 world Expo will__________ in Shanghai.
E-schopping.when properly ___________.can save us a lot of time and money.
______ the danger from enemy action, people had to deal with a severe shortage of food, clothing, fuel, and almost everything.
The professor gave orders to the students that the rest ______ before 5:30.
I can hardly ______ very loud noise while I am studying.