Instructions:
To sum up 1) ________ can be seen that convenience food has 2) ________ double economic advantage. It is cheaper 3) ________ buy in the first instance, and also allows parents 4) ________ spend more time earning money 5) ________ work. In the past people ate low quality food because they were poor, but now they do 6) ________ so they can afford 7) ________ certain lifestyle and that is not the fault of the manufacturers.
The answers are: 1 = it 2 = a 3 = to 4 = to 5 = at 6 = it 7 = a