The limits of a person’s intelligence, generally speaking ,are fixed at birth, but he reaches these limits will depend on his environment.
— I’d like to go to the cinema with you, Dad. — Sorry, my darling, but the film is ____ for adults only.
He left home in 1980 and has never come back ____.
— How about a game of chess? — ____
— Don’t forget to take the message to my teacher. — ____.
— How many students are going to the Great Wall? — ____.