1 . 根据语境，选择下框中的单词替换句中划线部分的词或词块，使之意思一致。

A. substantial       B. attain        C. faults        D. fundamental     E. expense        F.   adapting        G. stuffed

1. Many college graduates find they have great difficulty getting used to the dramatic changes in job market.
2. A basic change in the organization of health service was required.
3. The lesson learned at the cost of blood helped to sober us.
4. Never will you achieve success unless you are fully devoted to your work.
5. The government has invested a large amount of money and time in public transport.
6. Warehouses at the frontier between the two countries are filled with sacks of rice and flour.
7. Some parents are so proud of their children that they tend to overlook their shortcomings.

3 .          healthy habits, such as exercising and eating well, can steadily improve your physical and mental well-being.

A．Building

B．Having built

C．To build

D．To have built

9 . It is 10 years ________ these important environmental problems were addressed, which benefited the entire world.

A．since

B．after

C．before

D．when

10 . The practice of tai chi aims to maintain ______ ______ of yin and yang in the body through opposite movements. Eventually, tai chi brings about a state of physical balance and mental peace. （根据句意填空）