(A) 1. Postman used to walking several miles a day delivering letters. (Cover, deliver)
2. Doves have instinctively know the way home, so people were used to transmit information. (Utilize, carry messages)
3. Everyone should seriously carry out their duties. (Perform one's duty)
4. By the trainer after the horse run faster than before, more. (Much faster ... than)
5. Although the animals were not smart, they can do a lot of useful work, such as defense of property, to catch criminals, giving the entertainment and so on. (Such as)
6. If all goes well, his political career for many years sustainable. (Go well, last)
(B) 1. Unfortunately, this time he was seriously injured in traffic accidents. (Unfortunately; injure)
2. If you do this to tell your father that he would be very angry. (More than)
3. We have to drive through the oldest part of the city, there are many well-known construction. (Where)
4. If you go by car, we can save a lot of time. (Save)
5. Tom is full of hope and happiness. (Full of)
6. If he was too tired, they take turns driving the present. (Take turn)
(C) 1. Most of longevity are to eat the Cuchadanfan. (Live on)
2. He is not wealthy, they funded a number of school children in remote mountainous areas. (Remote)
3. Research shows that regular exercise can promote physical and mental health. (Regularly)
4. The region's water had not been contaminated. (Free from)
5. The experts stressed the particular importance of environmental protection. (Emphasize)
6. People who drink a lot easier to get heart disease. (tend to)
(12) 1. She is not only a well-known painter or a musician's talent. (As well as)
2. He shot at the bottle, only to hit the windows. (Aim at)
3. I can not understand why she should take advantage of my generosity. (Take advantage of)
4. If you want to sell used cars this, I suggest you go to advertising. (Advertise)
5. She tried to learn in order to be able to test the good results achieved. (So that)
6. Thanks to their help, the experiment of the problem has been resolved. (Thanks to)
(13) 1. Most of the students are not satisfied with the results of the examination. (Be satisfied with)
2. We have more than 50 school classes. (More han)
3. A little faster, or you'll miss the train. (Or else)
4. As you know, he is one of my close friend. (As)
5. I am sorry, I do not mean to hurt you. (Mean)
6. The book is composed of ten chapters. (Be made up of)
(14) 1. He found it difficult to adapt to life in the South. (Adapt to)
2. We plan to expand in this area. (Extend)
3. It is predicted that the storm will arrive tomorrow morning in the northern region of China. (Predict)
4. They are very fortunate to have survived the crash. (Survive)
5. The villagers continue to follow the women and children sitting on the side of the church, while men sit on the other side of the age-old tradition. (Follow, tradition)
6. With the development of modern industry, the big family-style businesses will be less. (With. ..)