—John has put forward _______ most challenging question for us to answer.—Yes, it really is. I have never heard _______ harder one.
Drive ________until you come to the small town,which lies about 100 kilometers ________ London.
—What's that terrible noise? —The neighbors ________ for a party.
Every possible means ________ to prevent the air pollution,but the sky is still not very clear.
I invited Joe and Linda to dinner,but ________ of them came.
More and more people are willing to ________ part of their incomes to school children in the povertystricken areas.