_____from the moon ,our earth with water ____70% of its surface, appears as a “blue ball”
_____ with so much trouble,we failed to complete the task on time.
________ around the Water Cube,we were then taken to see the Bird’s Nest.
I have ______ all the papers but I still can’t find my notes.
_____in the sports world,a sportsman needs to train constantly to keep himself in best condition.
Teenagers ________ their health because they play computer games too much.