今年七月，我们将庆祝中国共产党建党100周年。
We the 100th birthday of the Communist Party of China this July.
The Chens have moved into a new flat，leaving their old house （having nobody inside）．
We don't （be not sure if something is true）the great achievements China has made in the past 40 years．
How calm and brave the command （飞行员）was to fly the plane back safely in such a dangerous situation！
In Western culture，"Black （星期五）"sometimes represents an unlucky day．
Look， our library is （东）of the classroom building． It looks modern．