The country has already sent up three unmanned spacecraft,the most recent ________ at the end of last March.
The keythe earth is to change the waywe live.
There are over 100 night clubs in the city, but you don’t often seethat is empty.
It is _____ we do ---- you and I ____ changes the world.
The news has spread all over the country _____ Premier Wen Jiabao will attend the Copenhagen summit next week.
Entering the reading room, ______.