题目内容：

根据各题括号内的中文，结合句子的要求，写出正确形式的英语单词，每一横线上只能写一个单词。

1.As we know, the air is much                       (薄) in the sky.

2.Don’t be                        (害羞) when you stand on the stage.

3.                       (虽然) it was raining outside, he still went on running.

4.No one knew why Tom was                       (躺) on the playground .

5.Be careful, or you will fall                  (离开) the bike.

6.It’s delicious to have                        (西红柿)with white sugar?

7.Talking                       (在线) is popular with the young people.

8.The word                       (本身) has its meaning.