Have ________ try, and maybe you will win the free tickets to Italy.

_______not to be late for the meeting, we arrived forty minutes _______ the required time, but after _____seemed hours of waiting, we were informed the meeting had been canceled. 

The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase________.

—Who is ________ English teacher?—Well, it's Mrs.Green.She teaches ________ English very well.  

I was told that the water of the Ganjiang River is much cleaner than ____ of the Xiangjiang River.