—How about your trip to Hainan?—It couldn’t have been ________.Sometimes I went swimming in the sea;sometimes I lay on the sand.
The World Expo is like ____ great stage for cultural exchange, bringing people into closer contact with _____ rest of the world.
—Did you have a good time in Veitnam last week? ---______, it was too hot.
—Beijing experienced _____ heaviest snowfall in ____ month of January .
We already have ______pencils, but we need two ____ pens.
Why are you leaving right now? You promised to stay ____ hours.