It looks like you're asking about filling in the blanks regarding early Chinese history, specifically related to its geography. Here’s how you might complete those sentences:
- The Yellow River is especially important to China's early history.
- Winds from the Gobi Desert blow loess onto the river valley.
- When the river floods, it then deposits the rich material onto the surrounding plain. Because of this, agriculture was made possible in China.
So the completed sentences are:
"The Yellow River is especially important to China's early history. Winds from the Gobi Desert blow loess onto the river valley. When the river floods, it then deposits the rich material onto the surrounding plain. Because of this, agriculture was made possible in China."