—John has put forward _______ most challenging question for us to answer.—Yes, it really is. I have never heard _______ harder one.
_____ New York _______ London are two of the largest cities in the world.
______ met, it won’t be easily forgotten.
-----They used to be good friends, but now they are like strangers. ----- How _____ this ______?
We have spent _____ money on English books.
People in America speak the same language ______ the British do.