_____ to finish this composition in such a short time is a mystery.
We began to open to the outside world in the ate 1970s. , there have been great changes in the country.
Sun Yang, a young Chinese swimming talent, several gold medals before the 2012 London Olympics.
In hot summer, milk quickly turns sour it is refrigerated.
He found himself by a crowd of excited people and to escape.
---John, why are you so upset? ---I my cell phone all morning but it is nowhere to be found.