---Is it _____ for you to go out tonight?
--- Sorry. I have to help my mother with housework tonight.
A. difficult
B. convenient
C. humorous
The ____ of something is the amount of money that you have to pay in order to buy it.
A. speed B. size C. price
He is one of the most celebrated writers in America.
A. important
B. famous
C. humorous
The rivers will become dirtier and dirtier unless we take action to protect them.
A. take measures
B. take care
C. take advice
--- Because of the bad weather, the sports meeting has been cancelled.
--- What a pity!
A. put off B. called off C. taken off
A/An _______ is an unusual, exciting or dangerous experience.
A. advantage
B. research
C. adventure
