People often say that rising car ownership and appalling transport policies block the roads in mega-cities.
As I said to many students before, the key to presenting an advanced writing in IELTS task 1 is whether a candidate may interpret the prompt thoroughly.
For example:
Common sentence:
The sales of vehicle in China had increased sharply between 2000 and 2015.
Better paraphrase:
A surge in sales of wheels in China had been far more obvious over the last five-year.
Students who are more ambitious for professional academic writing should challenge sentence diversity as much as possible.