We may find that learning a foreign language does not have to be________learning our mother tongue,but can in fact be twice ________.
Was it because of the heavy snowstorm in Europe the flight had to be put off?
In no place of China little about the economic development nowadays.
Tsinghua University, in 1911, is home to a great number of outstanding figures.
In that school, English is compulsory for all students, but French and Russian are .
--- Tommy is planning to buy a car. --- I know. By next month, he enough for a used one.