_____ of the land in that district ______ covered with trees and grass.

Due to the widespread ________ of this medical technology, more diseases can be discovered and treated at an early stage.

How long does it take to get to the airport?—Forty minutes. But it’s foggy today. I’m not sure the highway will closes soon. Let’s set off earlier.

__________ big the office is! Is it for Tom?—No, it’s ___________. He shares it with me.

When I came here just now, I saw he _______with a black and white dog in the garden.