Children in China today have nothing ______.
The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
Some people are worrying about the possibility ________ mobile phones could be responsible for a range of illnesses, from rashes(皮疹) to brain tumors.
— Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow. —________.You are welcome.
It is the _________ in Britain that young people often do not shake hands when they meet someone for the first time.
Rose found her toy bear _______ under the chair.