一、选词填空-句子（本大题共10小题，共10.0分）
1. The club provides all kinds of______ （活动） including tennis， swimming and Yoga．
2. The river was so______ （污染） that it actually caught fire and burned．
3. The introduction______ （解释） the author's purpose for writing this article．
4. When someone says something______ （无聊的） I usually shut my eyes and pretend to go to sleep．
5. We are all proud of the______ （传统） culture of our nation．
