Mistakes don’t just happen; they occur for a reason. Find out the reason and then making the mistake becomes .
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.