We all know the truth _____ there are air, water and sunlight, there are living things.

I wrote a letter to the car dealer, _____ what had happened to my car.

This is a subject ___which we might argue for a long while.

CI worked for a short time as a cashier at a restaurant a few months ago. I also helped to clean up the tables when it was very busy. One night, just before Christmas, I found a large black wallet on the floor near one of the tables. I guessed I should check it to find out who was the owner, but I was very busy at the time. And I imagined that if there was something valuable in the wallet, the owner would be back. Sure enough, an hour later a man came up to the counter and asked if anyone had found a wallet. I asked him to describe the lost wallet, and after he described it exactly, I gave him the wallet. He expressed his thanks when I handed it to him. He asked me if I had opened it, and when I told him "no". At once he opened it and showed that it had nearly $800 in cash. He took out a twenty-dollar bill and handed it to me and I was amazed at this. "A reward for your honesty," he said and then turned and walked away.Thinking about it later, I began wondering whether 1 would have been honest if I had known what was in the wallet! I thought that if I had no way to find the owner and no one returned to get it, I might keep it. But it also came into my mind that I actually saved someone's Christmas plans by finding and returning the wallet. The good feeling it gave me was worth more than anything could buy.Which of the following is NOT true?

David got a higher grade in the final exam, for, you see, he made ________ mistakes.

My grandfather is as ________ as a young man and hates sitting around doing nothing all day.

Be careful next time, _____?

_______ a fire, hotel guests are asked to remain calm.

A"Seasame Street" has been called "the longest street in the world".This is because the television program by that name can now be seen in so many parts of the world.The program, which went on the air in New York in 1969, uses songs, jokes, and pictures to give children a basic understanding of numbers, letters and human relationships. More than 6 million children in the United States watch it regularly. The viewers（观众）include more than half the nation's children before school age.Many teachers consider the program a great help, though some teachers find that problems happen when the first-year pupils who have learned from "Seasame Street" are in the same class with those who have not watched the program. Tests have shown that children who watch it five times a week learn more than those who seldom watch it. In the United States the program is shown at different hours during the week in order to increase the number of children who can watch it regularly.Why has "Seasame Street" been so much more successful than other children's shows? Many reasons have been suggested. Perhaps one reason is that mothers watch "Seasame Street" along with their children. But the best reason for the success of the program may be that it makes every child watching it feel able to learn. The child finds himself learning, and he wants to learn more.People call "Seasame Street" the longest street in the world because_____.

Either the dean or the principal ______ the meeting.