Combine two sentences by using the ing-forms as in the example: economics is a social science. it studies economy. – – economics is a social science studying economy. – economics is a science. it attempts to find economic laws. – economists make predictions. they form the basis of economic theories. – there is a figure. it shows the interrelations between models, theories and reality. – it is a text. it speaks about economics. – it is a book. it speaks about some interesting observations.
Economists make predictions forming the basis of economic theories.
There is a figure showing the interrelations between models, theories and
reality.
It is a text speaking about economics.
It is a book speaking about some interesting observations.