With more forests being destroyed in that area, huge quantities of land _______ deserts each year.
I toured Jiu Zhai Gou, I was deeply impressed with its beautiful scenery.
The world seven continents and four oceans.
form the moon, our earth with water .seventy percent of its surface, appears as a blue ball.
The foreign guests, by an interpreter, came out of the hall.
Einstein was usually his scientific study that he even forgot to eat.