Trees on the hills can stop the rains from away the soil.
George. W. Bush, _______ President of the United States, is to visit China _______ third time.
Don’t worry if you can’t come to _______ party—I’ll save _______ cake for you.
I can’t remember when exactly the Robinsons left _______ city. I only remember it was _______ Monday.
Sugar is sold by _______ pound, petrol by _______ gallon.
—Did you enjoy yourself yesterday?—Yes. As you saw, party went on in _______ most pleasant atmosphere.