Environmental groups intend to ________ the pressure until the government changes the law.
You ______ be hungry already — you had lunch only two hours ago!
The old tower must be saved, _______ the cost.
The book was written in 1946, ____the education system has witnessed great changes .
---- It is demanded that the letter ___by the end of this week , dad !----I’ll do it immediately .
Please remain ______; the winner of the prize will be announced soon.