单词拼写。

根据下列句子所给汉语提示，在句子中横线上写出空缺处各单词的正确形式。

1. I have to go ______ (城镇商业区) later.

2. There are a lot of excellent ______(滑雪者)in the north of China.

3.We received a number of ______ (投诉)from customers about the lack of parking facilities.

4.The children were happy to see many colorful ______ (气球)go up into the blue sky..

5. You should exercise more so as to keep _____(精力充沛).

6. If something a ______ a liquid or other substance, it takes the substance into itself

   from the surface or space around it. 

7. Please pass me the d ______ control; I would like to change for CCTV-1.

8. The letter wasn't addressed to me but I opened it out of c ______.

9.The English Channel s ______ England from France.

10. They had the good news s ______ throughout the country.