When I came in, I found Lucy _____ by the window _____ to music.
Teachers recommend parents their children under 12 to ride bicycles to school for safety.
Every year a flood of farmers arrive in Shenzhen for the money-making jobs they before leaving their hometowns.
More and more high-rise buildings have been built in big cities space.
The girl had hardly rung the bellthe door was opened suddenly, and her friend rushed out to greet her.
Lots of rescue workers were working around the clock, supplies to Yushu, Qinghai Province after the earthquacke.