1. Going to Australia for further education for two month is a very e______ and exciting experience for me.
2. It's good manners for every one of us to show r _______ for the parents and teachers.
3. He said that he r_______ saying those words at the meeting. He wished he could take them back.
4. Make sure that you keep your manager i_______ of the fresh development by e-mail.
5. Your success in passing the exam will be a great _______ (满意) to your parents.
6. Reducing the gap between the rich and the poor is one of the _______ (挑战) facing the government.
7. After ______ (毕业) from university, he went to China to study Chinese.
8. The man was badly injured, so he must be sent to the hospital _______ (立即).
9. Mr. Brown often ______ (鼓励) his children to solve problems by themselves.
10. He was shaking her hand before I could finish the ______ (介绍).

1. Going to Malaysia for further education for one month is a very e___________ and exciting experience
    for me.
2. It's good manners to show r ____________ for the elders.
3. He said that he r____________ saying those words at the meeting. He wished he could take them back.
4. The children had an a____________ about what game to play, but they reached an agreement in the end.
5. If you work out r____________, you needn't take pills or skip meals to lose weight.
6. I'm trying to lose weight because I'm so ____________ (惭愧的) of my body.
7. What did he say in ___________ (解释)of his lateness?
8. Reducing the gap between the rich and the poor is one of the ___________ (挑战) facing the government.
9. Now he is ___________ (考虑) taking some pills, which he thinks will make him become stronger.
10. He spent most of money buying a long-sleeved dress to dance ___________ (吸引人).

A. difficulties  
B. challenges
C. problems  
D. conflicts