We need to find a solution to the problem as soon as possible
The earth has recently become warmer than it used to be
The river provides many useful service to the people in the city; for example, it can be used for water power
This rug was made by hand by an old woman about 50 years ago
She comes from a very poor area of the country
If we lose the rainforests, we will be in very big trouble
I think the discovery of how to grow crops was the most important event in the history of the world
This land was full of trees when I was a boy, but not it's used for farming
Rivers usually run into the ocean
The machine was very expensive,so he couldn't afford to buy it