1.   In the past five years, there has been a vast improvement in graduation rates.

2.   It led to a vast improvement for everybody in Baldersdale because it provided a regular income.

3.   Printing on special heavy and glossy paper can be a vast improvement over standard office paper.

4.   The airplane was a vast improvement over my dreamy mechanisms.

5.   The minivan is a vast improvement over its predecessor.

6.   The new computer system was a vast improvement.

7.   To Yacouba the new watchwords of democracy and modernization are vast improvements on the furore of the Revolution.

8.   Compact discs have brought about a vast improvement in recorded sound quality.

9.   The pub has been closed for eight weeks but tenant Tracy Willcox said the renovation was a vast improvement.