As is known to us, happiness consists ____ appreciating ____ you have.
.—What happened to the young trees we planted last week?—The trees ____ well, but I __________ them.
After five years of preparation, Shanghai is presenting the world _______ many say is the greatest Special Olympics.
At the Copenhagen conference, all the countries were called on to do all they could to control greenhouse gas emissions ______ it was too late.
Catherine, ____ the alarm clock for 6 o’clock, or you would oversleep and be late for the train.
—Do you think he will do me a favor?—As far as I know, he is the last one to help others. He ____ be prepared to give you a hand, though.