My uncle___________ until he was forty-five.
The girl looked at me with a _____ expression. Maybe the problem was quite _____.
---Why do you look so happy?---My aunt has bought a new car and she will invite me to go for a _____ this weekend.
Free medical service is _____ to all the members of the factory.
Many things _____ impossible in the past are quite common today.
Have you ever been to Mount Huangshan, _____ is famous for its towering pine forests and "sea of clouds"?