Let’s hold a party to your birthday and at the same time you on your passing the driving test.
In the next five years,the government's work will be evaluated________on people's happiness level instead of GDP alone.
________the young man is in great need of a computer in his work is known to his boss.
The average Facebook user in the United States has 245 friends,according to a study ______in February.
_______ on the top of the mountain is an ancient tower ______ back to two hundred years ago.
______in a new country,I was scared and feeling pretty anxious.