It’s ___ time that he has failed in the experiment.However, he has made up his mind to try ___ time next week.
A plan has been put forward_______more graduates should go to work in the country
Astronaut Zhai Zhigang has become the first Chinese_______in space.
---- Are they coming to help us?---- _______.
_______ some of the wine -- perhaps you will enjoy it.
This book_______a true story of how one person can make a difference in the lives of other people.