SECTION D. READING

I. Read the following passage and fill each of the numbered blanks with ONE suitable word. (0.75 pt)

There are number of things we can do if we want to help save our (21)____. For example, if we stop wasting paper and recycle paper and cardboard, we'll save some of the millions trees which are cut down every year. As far as the problem of rubbish is concerned, if we recycle bottles and cans and organic waste, and stop taking plastic bags (22)_____the supermarket, this will all make a big difference. We also have

to stop making unnecessary car journeys so as to cut down air pollution. Try walking or using a bike instead. Water is another problem, (23)____we should all take showers, not baths, to save water. Finally, we need to stop using so much energy, so try changing to low-energy light bulbs, and turning off unnecessary lights.

There are number of things we can do if we want to help save our (21)____.