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1.The number of cars fell gradually over the period from 1990 to 2000.
The number of cars .............................................................................................................................
2.The research investment decreased significantly in 2005.
The year ..............................................................................................................................................
3.There was a slight fall in the sales of mangos in 2006.
The sales .............................................................................................................................................
4.The quality of food in supermarkets has increased sharply.
There ...................................................................................................................................................
5.There was a quick drop of $3 million in sugar imports in 1988.
1988 ....................................................................................................................................................
6.The price of laptops dropped quickly over the period.
A quick drop .......................................................................................................................................
7.There was an upward trend in the number of visitors to the website.
The number of visitors ........................................................................................................................
8.The growth rate fluctuated wildly throughout the years.
There ...................................................................................................................................................
9.
The number of students applying to the university stabilized over the decade.
A stability ............................................................................................................................................
10.The year 2000 saw a gradual growth in the house price in London.
The house price in London ................................................................................................................