单词填空：(根据中文或句意，每题1分，共10分）
I don’t think it is _________ for you to get there alone . (危险)
You’ll feel much _________ if you do more exercise . (健康)
The watches are one of  those _______（ 英雄）over there.
It’s our  ________ to help you . (乐意)
My clothes are_______（熨烫）by my mother every day.
__________(任何事）is not difficult if you put your heart into it.
If you are on the plane,you will find the houses ____(在下面）look small.
We go to school every day _______  Saturday and Sunday.
The Great Wall is one of the seven _______ of the world .
Earth will be too ______ to live on  Humans have made so much rubbish.