–-I feel down now. All my work goes for nothing. --___________. That’s life.
Jack would like to go to the cinema with dad, but the film is ______ for adults only.
He made up his mind to devote his life ______ the river ______ polluted.
---Are you firmly against any independence move by Taiwan? ---Of course. That’s ______ our basic interest lies.
______ on a true story, the film is well worth ______ .
Mr. Johnson ______ his boss ______ his careless mistake.