根据句意及首字母或汉语提示完成单词，使句子正确、句意通顺。将答案写在题后相应的横线上。

1．There are some clouds in the s          ．

2．Today many families in China can a         to buy a car．

3．There are five people in the classroom, i        the English teacher．

4．At first the boy was a         to speak in public．

5．Taiwan b           to China for ever．

6．We should often exercise if we want to stay           (健康的)．

7．Our English teacher often gives US some            (建议)．

8．He didn't use             (打) volleyball．

9．              (幸运的是), I passed the exam．

10．I was         (吃惊的) to learn that Li Yang would come to our school to give us a lecture．