As is reported, it is 100 years________ Qinghua University was founded.
______ leaves the room last ought to make sure that the windows are closed and the door locked.
We should think of ways to stop the waste from the factory _____ our living environment.
The mistakes made by Chinese students are quite different from ________made by the Japanese students in English study.
___ are very deligent.
Having been born on the earth, we had no choice but ________ hospitality it offered.