在下列各句的空白处填入一个最恰当的单词，使句子意思完整，语法正确。
1. There are eight ______ traveling around the sun.
2. Supermarkets don't provide free _______bags. Most people use cloth bags or baskets instead.
3. Would you like to push the heavy box or_______it out of the room?
4. When we saw our national _______rising at the Olympics, we Chinese feel very proud.
5. It is none of your b . You needn't know it at all.
6. I bought a car that looks like a real one for my cousin as a birthday gift.
7. In the modern________ , computers become more and more important.
8. I have a lot of ________time. If you need help, you can call mc at any time.
9. —Would you mind opening the window?
—________not.
10. People in Changchun are of Zhou Yang, who won two gold medals at the Winter Olympics.
、Cl-
、
、Ca2+、K+