The Great Wall was built to keep ____ the invaders.
The police found that the house _______ and a lot of things _______.
To their great fear, they found _______ in the heaviest snowfall they had ever had.
—Why did Sam weep? —He couldn’t stand _______ like that before the whole class.
—Have you _______ any information? —No, I’m going to _______ the business department.
When you come to the fence, you can see a notice _______ there saying “the grass.”